[include-cleaner] Fix -DBUILD_SHARED_LIBS=on build

and apply an include-cleaner fix for the tool itself:)

addPPCallbacks requires the vtable of PPChainedCallbacks and needs a clangLex
dependency.

Author: MaskRay

clang-tools-extra/include-cleaner/tool/CMakeLists.txt

@@ -4,6 +4,7 @@ include_directories("../lib") # FIXME: use public APIs instead.
 add_clang_tool(clang-include-cleaner IncludeCleaner.cpp)
 clang_target_link_libraries(clang-include-cleaner PRIVATE
   clangBasic
+  clangLex
   clangFrontend
   clangLex
   clangSerialization

clang-tools-extra/include-cleaner/tool/IncludeCleaner.cpp

@@ -10,6 +10,7 @@
 #include "clang-include-cleaner/Record.h"
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Frontend/FrontendAction.h"
+#include "clang/Lex/Preprocessor.h"
 #include "clang/Tooling/CommonOptionsParser.h"
 #include "clang/Tooling/Tooling.h"
 #include "llvm/ADT/StringRef.h"