Roll fontconfig to 2.11.0 and reenable poppler on mac

gyp/fontconfig.gyp

 # GYP for fontconfig (
 #
 # This has been tested on Windows and Mac.
 # This library is native to Linux, so build from source is not necessary.
 #
 # Additional files for building under Windows are provided here: (LGPL)
 # http://comments.gmane.org/gmane.comp.fonts.fontconfig/4438
 
 {
   'variables': {
@@ skipping 148 matching lines @@
             'outputs': [ '<(configdir)/fonts.conf', ],
             'action': [
               'python', '../third_party/fontconfig/process-template.py',
               '-i', '../third_party/externals/fontconfig/fonts.conf.in',
               '-o', '<(configdir)/fonts.conf',
               '-p', '@FC_CACHEDIR@', '<(cachedir)',
               '-k', '@FC_DEFAULT_FONTS@', '/System/Library/Fonts',
               '-k', '@FC_FONTPATH@', '<dir>/Library/Fonts</dir>',
               '-p', '@CONFIGDIR@', '<(configdir)/conf.d',
               '-k', '@PACKAGE@', 'fontconfig',
-              '-k', '@VERSION@', '2.10.93',
+              '-k', '@VERSION@', '2.11.0',
             ],
           }, {
             'action_name': 'populate_fontconfig_cache',
             'message':
               'Generating fontconfig cache (this will take a few minutes).',
             'inputs': [
               '<(PRODUCT_DIR)/fc-cache',
               '<(configdir)/fonts.conf',
             ],
             'outputs': [ '<(cachedir)/CACHEDIR.TAG', ],
@@ skipping 10 matching lines @@
             '$(SDKROOT)/usr/lib/libexpat.dylib',
           ],
           'sources': [
             '../third_party/externals/fontconfig/fc-cache/fc-cache.c',
           ],
         },
       ],
     }],
   ],
 }