Add a NEON version of the tex hash.

Should be used only for NEON devices.  Currently only compiled on Android.
Move normal reversion into the vertex shader instead of the decoder.
Implemented DELETEDATA mode of saveDialog.
Merge pull request #4409 from shenweip/patch-2

Implemented DELETEDATA mode of saveDialog.
Regression font alignment fix
Merge pull request #4410 from raven02/patch-12

Regression font alignment fix
Turn off the UNPACK optimization when texture scaling is on. Fixes #4408
Merge pull request #4407 from unknownbrackets/texcache

Add a NEON version of the tex hash.
Android armv6/etc. buildfix.