Add ES 3.0 support for iPhone
define MAY_HAVE_GLES3
Add support for GL_NV_framebuffer_blit
Add NV_framebuffer_blit
Fix fullscreen resizing. It wasn't working properly.
SDL: Let the window be resizable on platforms it makes sense on.
Add encodeUnits() to utf8/utf16/sjis.

So that we know how many units (e.g. u16s) are needed to encode.
Merge pull request #211 from unknownbrackets/ccc

Add encodeUnits() to utf8/utf16/sjis.
Merge pull request #208 from raven02/patch-20

Add support for GL_NV_framebuffer_blit
Merge pull request #206 from thedax/sdlResize

SDL: Add very basic resizing window capabilities for desktop SDL builds.
Merge pull request #209 from thedax/sdlFullscreenFix

SDL: Fix fullscreen resizing.
Apply patch from gschwind that lets us accept more audio formats

(although I'm not sure which ones would apply...)
Merge pull request #207 from raven02/patch-19

Add ES 3.0 support for iPhone
Add the ability for Sliders and their corresponding Screens to have the ability to move in steps greater than 1.
No float support, only the integer screens are affected.
Make sure the Slider can't step in increments of less than 1.
Use integers instead.
Add GL_NV_pixel_buffer_object that seen on Tegra platform
gl_extensions.PBO_NV = strstr(extString, "GL_NV_pixel_buffer_object") != 0;
Merge pull request #214 from raven02/patch-21

Add GL_NV_pixel_buffer_object that seen on Tegra platform
Merge pull request #213 from thedax/slider-stepping

Add the ability for integer-based Sliders and their corresponding Screens to have the ability to move in steps greater than 1.