iOS build errors

[the avenger]

there has been iOS build errors for quite a while and the issue on github seems to keep getting bumbed down and left unnoticed so i will just post them again here in hope of them getting fixed:
/Users/amerrefai/Documents/ppsspp/native/gfx_es2/gl_state.cpp:100:27: Use of undeclared identifier 'PFNGLGENVERTEXARRAYSOESPROC'

/Users/amerrefai/Documents/ppsspp/native/gfx_es2/gl_state.cpp:101:27: Use of undeclared identifier 'PFNGLBINDVERTEXARRAYOESPROC'

/Users/amerrefai/Documents/ppsspp/native/gfx_es2/gl_state.cpp:102:30: Use of undeclared identifier 'PFNGLDELETEVERTEXARRAYSOESPROC'

/Users/amerrefai/Documents/ppsspp/native/gfx_es2/gl_state.cpp:103:25: Use of undeclared identifier 'PFNGLISVERTEXARRAYOESPROC'

/Users/amerrefai/Documents/ppsspp/native/gfx_es2/gl_state.cpp:109:30: Use of undeclared identifier 'PFNGLDISCARDFRAMEBUFFEREXTPROC'

[jtraynham]

In native/gfx_es2/gl_state.cpp, change line 94 to:

#if defined(IOS) || defined(__SYMBIAN32__) || defined(MEEGO_EDITION_HARMATTAN)

I just submitted a pull request for it as well