[coretext] Reverse glyphs if right-to-left

The shape.c layer is doing this for clumsy backends but warns.
Fix properly.
[win32] Invert y_offset

All these years, in the win32 backend, the y_offset was inverted.
Ie. no vertical glyph positioning worked, ever...  Sigh.
Bug 733898 - Fix build of pangocairo-fontmap.c
doap category core
Don't break run in the middle of Hangul jamo sequence

See comments.

Bug 705727 - Incorrect rendering w/ Hangul syllable composition GSUB
https://bugzilla.gnome.org/show_bug.cgi?id=705727
Add more Hangul jamo to previous commit

https://github.com/GNOME/pango/commit/61aeba6257ec7691a7a5222fb69aec3cc042435b#commitcomment-7215250
doap: add <programming-language>
[coretext] Bug 734174 Crashes on OS  Yosemite
[coretext] Minor fix
Merge branch 'master' into kill-modules

Conflicts:
	pango/pangocoretext-shape.c