Rename some global symbols defined by glu's libtess which conflict with the WebKit implementation.  #define them with a prefix, as we did with the main entry points.
Rename some global symbols defined by glu's libtess which conflict with the
WebKit implementation.  #define them with a prefix, as we did with the main
entry points.

Review URL:  http://codereview.appspot.com/4551079/



git-svn-id: e8541e15acce502a64c929015570ad1648e548cd@1457 2bbb7eff-a529-9590-31e7-b0007b416f81

MatChung/color-emoji.skia,Frankie-666/color-emoji.skia,Frankie-666/color-emoji.skia,Frankie-666/color-emoji.skia,Frankie-666/color-emoji.skia,MatChung/color-emoji.skia,Hankuo/color-emoji.skia,Hankuo/color-emoji.skia,Frankie-666/color-emoji.skia,MatChung/color-emoji.skia,Hankuo/color-emoji.skia,MatChung/color-emoji.skia,hbwhlklive/color-emoji.skia,Hankuo/color-emoji.skia,hbwhlklive/color-emoji.skia,Hankuo/color-emoji.skia,Frankie-666/color-emoji.skia,MatChung/color-emoji.skia,hbwhlklive/color-emoji.skia,hbwhlklive/color-emoji.skia,hbwhlklive/color-emoji.skia,Hankuo/color-emoji.skia,hbwhlklive/color-emoji.skia,MatChung/color-emoji.skia