Comment 20 for bug 560795

Created attachment 78501
patch to import harfbuzz

1. use 'Tools/Scripts/update-webkit --gtk' to pull/sync harfbuzz source
2. harfbuzz is located at WebKit/gtk/libs/harfbuzz/
3. use in $BUILD/WebKit/gtk/libs/harfbuzz/src/libharfbuzz.so for now