LDPC Decoder Enhancements

LDPC decoder enhancements:

1. Processing buffer reduction

• cnProcBuf and bnProcBuf are merged into procBuf.
• cnProcBufRes and bnProcBufRes are merged into procBufRes. => memory consumption reduced by 240kB which is approximately half the total processing buffer size.

2. BN processing directly on the CN processing buffer

• Eliminate cn2bn and bn2nc memcopies

Other:

• fixed some bugs in automated header generation as well.