Add libxml files as unknown license reference test

Also fix other test failures.

Reference: #3112
Signed-off-by: Ayan Sinha Mahapatra <ayansmahapatra@gmail.com>

Author: AyanSinhaMahapatra

tests/licensedcode/data/plugin_license/license_reference/scan-unknown-reference-copyright.expected.json

@@ -0,0 +1,27 @@
+Except where otherwise noted in the source code (e.g. the files hash.c,
+list.c and the trio files, which are covered by a similar licence but
+with different Copyright notices) all the files are:
+
+ Copyright (C) 1998-2003 Daniel Veillard.  All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is fur-
+nished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+DANIEL VEILLARD BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CON-
+NECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of Daniel Veillard shall not
+be used in advertising or otherwise to promote the sale, use or other deal-
+ings in this Software without prior written authorization from him.
+

tests/licensedcode/data/plugin_license/license_reference/scan/scan-unknown-reference-copyright/Copyright

@@ -0,0 +1,122 @@
+#! /usr/bin/env python
+###
+#
+#       build_glob.py : Build the global_functions.h and global_functions.c
+#                       files which are required to implement the user
+#                       interface to global variables now that thread specific
+#                       data (TSD) is used to emulate global state.
+#
+#       See Copyright for the status of this software.
+#       Gary.Pennington@sun.com
+###
+import os, string
+
+class globvar:
+    def __init__(self, type, name):
+        self.type=type
+        self.name=name
+
+def striplinesep(line):
+    while line and line[-1] in ('\r','\n'):
+        line = line[:-1]
+    return line
+
+def writeline(file, line=None):
+    if line:
+        file.write(line)
+    file.write("\n")
+
+if __name__ == "__main__":
+    globals={}
+    global_data=open("global.data").readlines()
+    global_code=open("globals.c").readlines()
+    global_hdr=open("include/libxml/globals.h").readlines()
+    global_functions_hdr=open("include/libxml/globals.h", "w+")
+    global_functions_impl=open("globals.c", "w+")
+
+    #
+    # Rebuild the beginning of the file up to the
+    # Automatically generated string
+    # 
+    for line in global_hdr:
+        line = striplinesep(line)
+        if line == " * Automatically generated by build_glob.py.":
+	    break
+	writeline(global_functions_hdr, line)
+
+    writeline(global_functions_hdr, " * Automatically generated by build_glob.py.")
+    writeline(global_functions_hdr, " * Do not modify the previous line.")
+    writeline(global_functions_hdr, " */")
+    writeline(global_functions_hdr)
+
+    for line in global_code:
+        line = striplinesep(line)
+        if line == " * Automatically generated by build_glob.py.":
+	    break
+	writeline(global_functions_impl, line)
+
+    writeline(global_functions_impl, " * Automatically generated by build_glob.py.")
+    writeline(global_functions_impl, " * Do not modify the previous line.")
+    writeline(global_functions_impl, " */")
+    writeline(global_functions_impl)
+
+    # Now process the data and write it to the appropriate output file
+    for line in global_data:
+        if line[0]=='#':
+            continue
+        line = striplinesep(line)
+        fields = string.split(line, ",")
+        # Update the header file
+        writeline(global_functions_hdr)
+        global_functions_hdr.write("extern "+fields[0]+" *")
+        if fields[2]:
+            global_functions_hdr.write("(*")
+        global_functions_hdr.write("__"+fields[1]+"(void)")
+        if fields[2]:
+            global_functions_hdr.write(")"+fields[2])
+        writeline(global_functions_hdr,";")
+        writeline(global_functions_hdr, "#ifdef LIBXML_THREAD_ENABLED")
+        writeline(global_functions_hdr,"#define "+fields[1]+" \\")
+        writeline(global_functions_hdr,"(*(__"+fields[1]+"()))")
+        writeline(global_functions_hdr,"#else")
+        if fields[2]:
+            writeline(global_functions_hdr,"LIBXML_DLL_IMPORT extern "+fields[0]+" "+fields[1]+fields[2]+";")
+        else:
+            writeline(global_functions_hdr,"LIBXML_DLL_IMPORT extern "+fields[0]+" "+fields[1]+";")
+        writeline(global_functions_hdr,"#endif")
+        # set/get for per-thread global defaults
+        if fields[3]:
+            writeline(global_functions_hdr,fields[0]+" "+fields[1][:3]+"ThrDef"+fields[1][3:]+"("+fields[0]+" v);")
+        # Update the implementation file
+        writeline(global_functions_impl)
+#        writeline(global_functions_impl, "extern "+fields[0]+" "+fields[1]+";")
+        writeline(global_functions_impl, "#undef\t"+fields[1])
+        writeline(global_functions_impl, fields[0]+" *")
+        if fields[2]:
+            global_functions_impl.write("(*")
+        global_functions_impl.write("__"+fields[1]+"(void)")
+        if fields[2]:
+            writeline(global_functions_impl, ")[]")
+        writeline(global_functions_impl, " {")
+        writeline(global_functions_impl, "    if (IS_MAIN_THREAD)")
+        writeline(global_functions_impl, "\treturn (&"+fields[1]+");")
+        writeline(global_functions_impl, "    else")
+        writeline(global_functions_impl, "\treturn (&xmlGetGlobalState()->"+fields[1]+");")
+        writeline(global_functions_impl, "}")
+        # set/get for per-thread global defaults
+        if fields[3]:
+            writeline(global_functions_impl,fields[0]+" "+fields[1][:3]+"ThrDef"+fields[1][3:]+"("+fields[0]+" v) {")
+            writeline(global_functions_impl,"    "+fields[0]+" ret;");
+            writeline(global_functions_impl,"    xmlMutexLock(xmlThrDefMutex);")
+            writeline(global_functions_impl,"    ret = "+fields[1][:3]+fields[1][3:]+"ThrDef;")
+            writeline(global_functions_impl,"    "+fields[1][:3]+fields[1][3:]+"ThrDef = v;")
+            writeline(global_functions_impl,"    xmlMutexUnlock(xmlThrDefMutex);")
+            writeline(global_functions_impl,"    return ret;")
+            writeline(global_functions_impl,"}")
+    # Terminate the header file with appropriate boilerplate
+    writeline(global_functions_hdr)
+    writeline(global_functions_hdr, "#ifdef __cplusplus")
+    writeline(global_functions_hdr, "}")
+    writeline(global_functions_hdr, "#endif")
+    writeline(global_functions_hdr)
+    writeline(global_functions_hdr, "#endif /* __XML_GLOBALS_H */")