android: fix 32bits ndk path
ofGstUtils: unmap video frame to avoid leaks
PG bring uptodate with master
android: update projects to latest sdk
android examples: assimp and opencv, compile for arm7 only since the libraries are missing an x86 version
assimp and shader: reload gl resources when app is resumed
Android Shader Example Fix

Fix for #2825 as described by @micuat
https://github.com/openframeworks/openFrameworks/issues/2825
Merge pull request #2924 from danoli3/android-shader-example-fix

Android Shader Example Fix
updated CHANGELOG
Merge branch 'master' of github.com:openframeworks/openFrameworks
Merge branch 'master' of https://github.com/openframeworks/openFrameworks.git into rexgo