DSTG Modifications:

1.8.1: pugixml.cpp: Modified to remove/ignore comments within pcdata when comment parsing is turned off (default).
                  Search for "DST Mod" or "enable_dst_modifications" within code.

1.7: pugixml.cpp: Modified to remove/ignore comments within pcdata when comment parsing is turned off (default).
                  From line 2563. Also see line 3376. Search for "DSTG Mod" within code.

1.5: pugixml.cpp: Modified to remove/ignore comments within pcdata when comment parsing is turned off (default).
                  From line 2051. Also see line 2850. Search for "DSTO Mod" within code.
