Added version info generation to android build script.
Merge pull request #16 from runrevmark/feature-commercial_integration

Added version info generation to android build script.
Removed generated file IMarketBillingService.java and updated .gitignore.
Split up Linux makefiles to enable building of commercial and community.
Merge pull request #17 from runrevmark/feature-commercial_integration

Feature commercial integration - linux makefiles updated.
Merge branch 'feature-commercial_integration' into release-6.0.1
Update prebuilt submodule.
Tweaks to ensure derived files all build correctly.