Support some struct and types

Author: sue445

_tools/ruby_h_to_go/lib/ruby_header_parser/data.yml

@@ -43,10 +43,13 @@ function:
 struct:
   allow_name:
     - !ruby/regexp /^rb_/i
+    - re_registers
 
 type:
   allow_name:
     - !ruby/regexp /^rb_/i
     - !ruby/regexp /^st_/i
     - ID
     - VALUE
+    - regex_t
+    - OnigPosition