*Fixed common/subs/src/iop_sif2, as it was broken when the definition for the SIF2 DMA interrupt was changed in iop/intrman.h.
*Added NOP instructions into the short loops within various assembly functions of libc (Not only to get rid of warnings, but to make it run reliably when run on an affected EE chip).
*Added missing casts to the I/O function table of PFS to inhibit warnings.
*Rewrote the ADPENC tool to get rid of warnings and to make it more robust. I can't test this, so please help to test it!