[glib] Update to 2.36 now it supports atomics on Mac again
[cairo] Update to 1.12.14 for perf fixes and to reduce patchset
[pango] Update to 1.34.0 to reduce patchset
[pango,cairo] Add patches for astral plane glyph support
Use specific revisions of theme engines
Update toolchain and gtk+ deps to latest stable versions
Use libjpeg-turbo instead of libjpeg

It's abi-compatible and 2-4 times as fast, used already by
Firefox and Chrome.