add basic PGF font code.
PGF font works!
Please put font file from flash0:/font/ to Flash/font/
sceFont:
    remove load_all_glyph(). Load glyph runtime.
    add sceFontFindOptimumFont.
sceIo:
    PGD handle bug fix.
Merge branch 'master' of https://github.com/hrydgard/ppsspp.git

Conflicts:
	Core/Core.vcxproj.filters
	Core/HLE/sceFont.cpp
	Core/HLE/sceGe.cpp
	Core/HLE/sceIo.cpp
	Core/HLE/sceKernelMutex.cpp
remove defines
change return method
Merge branch 'fork_master/master'

Conflicts:
	Core/HLE/sceIo.cpp
add DLC support
Merge pull request #1365 from tpunix/master

add DLC support to ppsspp