Use filter directly without register.
Bug fix when loading filter failed.
Improve sceKernelStartModule handling

Fixes 'bogus priority' errors (and maybe more).
Tested on God Eater Burst and fixed its "bogus priority". I haven't found any games this breaks.
Update sceKernelModule.cpp
Fix the save loading for God Eater Burst and Gundam VS Gundam NP
Update sceKernelModule.cpp
Implement pcm voice correctly.
Merge pull request #1899 from oioitff/atrac-fix

Atrac fix
Fix PPSSPPHeadless CMake build.
Use another method to scale by envelopValue.
Merge pull request #1901 from oioitff/audio-fix2

Use another method to scale by envelopValue.
Merge pull request #1898 from oioitff/audio-fix

Implement pcm voice correctly
ARMJIT: Fix and use DIV, DIVU, INS and EXT (ARMv7 and VFPv4 implementations).
Add more logging to elf loading, cleanup.
Add a couple more unknown syscalls.
Keep track of imported/exported vars.

Not yet actually linked up, though.
Merge pull request #1900 from xsacha/master

ARMJIT: Fix and enable DIV, DIVU, INS, EXT including ARMv7 and VFPv4 variants.
Perform the actual variable relocations, hurray.
Merge pull request #1902 from unknownbrackets/elf-fix

Process variable imports
Integrate atrac3+ low level decoding from oioitff media branch