Clear vertex cache on savestates.

Just so it's an easy way.  We can remove later when we're sure.
Fix some missing GPUCommon state.
Don't crash if currentList is NULL.
Don't savestate the last frame time.
Merge pull request #667 from unknownbrackets/savestates

More savestate fixes
Fix SW transform in Kidou_Senshi_Gundam_AGE_Universe_Accel
Cut down on rescheduling in sceGeListEnqueue.

Fixes ClaDun X2.
Check the entire texture again, fixes wrong tex.

Not sure why, but only on Android.  Also faster on Windows.
Merge pull request #671 from unknownbrackets/texcache

Check the entire texture again, fixes wrong tex
Merge pull request #669 from raven02/master

Fix SW transform in Kidou_Senshi_Gundam_AGE_Universe_Accel
Merge pull request #670 from unknownbrackets/ge-fix

Cut down on rescheduling in sceGeListEnqueue
Merge pull request #672 from xsacha/master

Compile translations in to binary
Merge pull request #673 from xsacha/master

Playbook build fix
Minor speedup to 16-bit texture color conversion.
Enable dithering in GLES UI
Set lastBoundTexture when creating a new one.
Updated PPSSPP.pro and added german language
Merge pull request #674 from xsacha/master

Qt update
updated german translation
Some texturecache code cleanup. Fix missing DIRTY_AMBIENT.
The latter fixes the blinking caustics in the tunnel in Vineta K in Wipeout Pure.
And surely other things.