OFAndroid: fix resource path detection
added missing files to project generator project
Merge pull request #1927 from elliotwoods/fix-missingFilesInProjectGenerator

added missing files to project generator project
android: several fixes

EGLConfig: better configuration choosing, solves problems with some devices
Data folder detection
loadPercent callback
ofConstants: android detection through __ANDROID__ define
Merge pull request #1929 from arturoc/bugfix-android

android: several bugfixes
makefiles: fix PROJECT_EXTERNAL_SOURCE_PATHS
Merge branch 'develop' of github.com:openframeworks/openFrameworks into develop
makefiles: fix ALL_OF_PROJECT_SOURCE_PATHS when empty PROJECT_EXTERNAL_SOURCE_PATHS