[[ Bug 12648 ]] Shell command does not accept spaces despite being quoted (Windows)
[[ Bug 12646 ]] Prevent image resizing when getting alphadata
[[ CoreText ]] Added support custom font loading.
[[ CoreText ]] Updated font creation routines in an effort to remove warning on 10.9.
[[ CoreText ]] Updated text drawing to take into account extra width required by italic fonts.
[[ Bugfix 12612 ]] Change block layout to use floating-point
[[ Bugfix 12612 ]] Add bugfix note
[[ CoreText ]] Updated docs note to add info about symbol fonts.
[[ Bug 12567 ]] Connecting to an HTTPS URL via a proxy fails if libURLSetVerification is true.
[[ Bug 12567 ]] Tweaked feature note.
Merge branch 'feature-coretext' of https://github.com/runrevmichael/livecode into feature-coretext
Merge branch 'bugfix-12612' of https://github.com/runrevfraser/livecode into bugfix-12612
Merge remote-tracking branch 'origin/release-6.6.3' into develop
Merge remote-tracking branch 'origin/bugfix-12567' into develop

Conflicts:
	engine/src/executionerrors.h
Merge remote-tracking branch 'origin/feature-coretext' into develop
Minor tweak to get things to compile on develop.
[[ Bug 12557 ]] Commented out transformation code in MCControl::redraw - this isn't a viable approach, but will leave the code for now as it might be useful at some point.
[[ CoreText ]] Tweaked docs note.
[[ CoreText ]] Tweaked custom font loading routines.
Merge branch 'bugfix-12646' into release-6.6.3
Merge branch 'bugfix-12648' into release-6.6.3
[[ Bug 12557 ]] Force the use of anti-aliasing when the context has a non-integer transform
[[ Bug 12557 ]] Updated release note.