- Fix double free()

(ie. all characters from the Basic Multilingual Plane from Unicode)

- Supposedly fix a memleak
- Fix a few warnings

* In case we do scaling on SSA subs, we also need to adjust the canvas size in which we render. (there you go bigben :D ) fixes #562

- made time property persistable, use 'StartTime' under HTML
- removed functions with stdcall suffix from exported functions in DLL

* Move out Advanced/Misc/Misc options
* Don't show any Stuff/General category anymore
* For interfaces, split out "General" from main interface settings
* Remove dummy from prefs
* Clean hotkeys settings

(Closes:#598)

* both: fixed each one 'comparison of distinct Objective-C types lacks a cast' warnings

*EXPERIMENTAL* Default to disabling vout_synchro, but not dropping of late pictures in the video_output thread. (Refs:#593)

Please test heavily against MPEG1/2 streams.

 the var manager, to avoid a crash at exit when an expression
 'not window.isVisible' is used in a skin.

(it only works on platforms where libtool works anyway)

bug for Winsock DNS resolver, inasmuch as is possible - closes #445.

Should it fail to fix the bug, I'm afraid there would be no solution,
but not to use Windows without its IPv6 stack.