synced the latest changes in the java opengl renderer
some work to eventually enable multisampling on android, not working yet
applied last changes from java
corrected ortho() params in P2D
sync with desktop gl
updated to latest gl changes
sync with desktop gl
changes in Texture from desktop gl
android sync from desktop gl
sync latest fix from desktop gl
fix parameterization to get rid of warnings
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/processing/mode/android/Permissions.java
Set both preferences and environment sdk variables
Merge remote-tracking branch 'origin/master'
Show USB driver warning
Sign APK using SignedJarBuilder
Merge pull request #69 from imilka/bugfixes-2

wrapping up GSOC with more bugfixes from Imil
removed unused import, commented out getComments() method
updated properties to include min/max revision fields
minor edit to the properties file