The draw color affects RenderClear() as well.  (thanks to the feedback form to whoever pointed this out)

Update SDL_HasClipboardText functions to return value based on clipboard content; Fix memory leak in fallback SetClipboard implementation

Thanks to Mason Wheeler for the fix!

Thanks to Patrick Baggett for the fix!

Previous change broke it.

Fixes Bugzilla #1314.

Thanks to Joseph Toppi for the fix!

--HG--
extra : rebase_source : be4596056669a0a9c7580355084b7f9eca345d78

Thanks to Joseph Toppi for the fix!

--HG--
extra : rebase_source : c450494b2c2e397098e50b621b01895fc587357f

Thanks to Brian Barnes for the initial work on this patch!

This was originally from a third party, under a different license than SDL,
 so it has to go.

Fixes Bugzilla #1264.

Thanks to Gueniffey for the patch!

Fixes Bugzilla #1191.

This patch is based on work done by Vittorio Giovara.

Obtain the correct environment in a thread-safe way when appropriate instead.

Fixes Bugzilla #1312.

Thanks to Bill Chenbin for the patch!

We need this for GLES2 support.

Fixes Bugzilla #1290.

Thanks to Gabriel Jacobo for the patch!

--HG--
extra : rebase_source : 80bd6c922b4e9c74582cc85d62462d87431315bd

Fixes Bugzilla #1292.

Thanks to Vittorio Giovara for the patch!

This solves the problem that on iPad you would get 1024x768 instead
of 768x1024 when calling SDL_GetDesktopDisplayMode(0, &mode)
See Apple's doc for UIScreenMode where is says:
"Most developers should never need to use the information provided
 by this class and should simply use the bounds provided by the
 UIScreen object for their drawing space."