Add ERROR_MPEG_AVC_DECODE_FATAL in sceMpeg.h
Tidy up sceMpeg()
sceMpeg : Not to check as Mpeg handle
Few advice fixes
Fix PSPSaveDialog::Update

Fix Miyako lock up in saving screen
Fix logic
Merge pull request #5303 from sum2012/sce-utility3

Fix PSPSaveDialog::Update
Merge pull request #5301 from raven02/patch-17

Code clean-up sceMpeg()
Merge pull request #5302 from raven02/patch-18

sceMpeg : Not to check as Mpeg handle