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.h

@@ -23,7 +23,7 @@ enum
     TMEM_SIZE = 1024*1024,
     HALFTMEM_SIZE = 512*1024
 };
-extern u8 texMem[TMEM_SIZE];
+extern  GC_ALIGNED16(u8 texMem[TMEM_SIZE]);
 
 enum TextureFormat
 {