SWCommandProcessor: fix the CPReg structure fields

This structure fields should match byte-to-byte the layout of MMIO registers:
it is addressed using the MMIO reg address when doing a CP MMIO read. This was
unfortunately not the case, causing CP reads to be mostly broken with the
software renderer.
Silence warning
Merge pull request #28 from Tilka/warnings

Silence warning
Merge pull request #27 from delroth/swcp-struct-fix

SWCommandProcessor: fix the CPReg structure fields
Remove a pointless c_str() call in FileUtil.cpp. The function takes a string in it's parameter
Merge pull request #29 from lioncash/remove-pointless-cstr

Remove a pointless c_str() call in FileUtil.cpp.