added the possibility to allocate aligned memory, an use it to allocate the buffer utilized in texture decoding, this will make a little easy to use aligned writes when possible in sse2/3 optimized algorithms.

some code additions for future use ;).
please gcc user test this as i don't have opportunity to test it myself i only use reference code to.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7247 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/VideoCommon/Src/TextureDecoder.cpp

@@ -44,7 +44,7 @@ extern const unsigned char sfont_raw[][9*10];
 
 // TRAM
 // STATE_TO_SAVE
-u8 texMem[TMEM_SIZE];
+ GC_ALIGNED16(u8 texMem[TMEM_SIZE]);
 
 
 // Gamecube/Wii texture decoder