Correct a decode quant matrix initilization bug where duplicate detection/shortcircuiting was  failing to account for different clamp values in inter/intra matricies.
Correct a decode quant matrix initilization bug where duplicate detection/shortcircuiting was 
failing to account for different clamp values in inter/intra matricies.

Simultaneously make dupe detection more aggressive



git-svn-id: 8dbf393e6e9ab8d4979d29f9a341a98016792aa6@14057 0101bb08-14d6-0310-b084-bc0e0c8e3800

KTXSoftware/theora,Distrotech/libtheora,Distrotech/libtheora,KTXSoftware/theora,KTXSoftware/theora,KTXSoftware/theora,Distrotech/libtheora,Distrotech/libtheora,KTXSoftware/theora,Distrotech/libtheora