Merge to XFA: Update bundled freetype to 2.6.1

xfa.gyp

 {
   "variables": {
     "pdf_enable_v8%": 1,
   },
   "target_defaults": {
     "defines": [
       "PDF_ENABLE_XFA",
     ],
   },
   "targets":[
     {
       "target_name":"xfa",
       "type":"static_library",
       'dependencies': [
         '<(DEPTH)/v8/tools/gyp/v8.gyp:v8',
       ],
       'export_dependent_settings': [
         '<(DEPTH)/v8/tools/gyp/v8.gyp:v8',
       ],
       'include_dirs': [
         '<(DEPTH)/v8',
         '<(DEPTH)/v8/include',
         'third_party/freetype/include',
+        'third_party/freetype/include/freetype',
       ],
       'defines' : [
         'FT2_BUILD_LIBRARY',
       ],
       "sources":[
         "xfa/include/foxitxfa.h",
         "xfa/include/fwl/adapter/fwl_adapterclipboardmgr.h",
         "xfa/include/fwl/adapter/fwl_adaptercursormgr.h",
         "xfa/include/fwl/adapter/fwl_adaptermonitormgr.h",
         "xfa/include/fwl/adapter/fwl_adapternative.h",
@@ skipping 681 matching lines @@
           "sources": [],
         }],
         ["OS == 'mac'", {
           "configurations": {},
           "sources": [],
         }],
       ]
     }
   ]
 }