Remove unused include
Add another Button to the Button map for Controllers ( like DS3) with 16
Buttons. Fixes Square button not being recognised by PPSSPP when using a
Dual Shock 3 Controller.
using Tabs instead of spaces
Merge pull request #5805 from Arakash/SquareIgnore

Add another Button to the Button map for Controllers ( like DS3) with 16 Buttons
Merge pull request #5793 from sum2012/patch-20

Remove unused include
Implement some sceDeflt functions.
sceZlibDecompress should be using the adler32 check instead of CRC.
zlib compressed data uses adler according to zlib docs.
Make sceZlibDecompress error messages more descriptive.
Also move variables to be declared when used. Makes for more 'sectioned'
code, so the decompression process is easier to follow.