Restore viewport natively in fbo_bind_as_render_target()
Add comment and specify to use ARM/ADERNO
Always restore viewport after render target binding
Fix French UI crash

Reported in https://github.com/hrydgard/ppsspp/issues/5843
by @vnctdj
Use @unknownbrackets fix
Merge pull request #205 from sum2012/patch-1

Fix French UI crash in debug build
Merge pull request #204 from raven02/patch-18

Restore viewport natively in fbo_bind_as_render_target()
Temporary workaround to reenable O as Back prevention