Merge pull request #162 from lioncash/build-fix

Fix the build.
Merge pull request #164 from lioncash/stubs

Stub some sceNp funcs
Add a parameter check to some Gif/Jpg/Png decoding syscalls
Merge pull request #165 from lioncash/misc

Add a parameter check to some Gif/Jpg/Png decoding syscalls
lv2 sc_table edited & FP recompiler ddx/ddy fix

* Replaced ddx/ddy with dFdx/dFdy in FP recompiler.
* SysCalls table edited. It should now be easier to read / edit. Tell me
if you disagree with this.
Implement/stub cellSysutilGetBgmPlaybackStatus
Merge pull request #168 from darkf/sysutil

Implement/stub cellSysutilGetBgmPlaybackStatus
Use spaces for vertical alignment
Merge pull request #169 from lioncash/tab-fixes

Use spaces for vertical alignment
Stub some more sysutil BGM functions.