gles2: move includes to constants
Merge branch 'feature-matrixmode' into gles2
gles2: ofShader and transformation matrices stack working
gles2: vbo and vbomesh working
gles2: mesh, polyline, path, textures, begin/endshape working
gles2: default shaders in code + constructor with shader paths
ofTexture: fix quad initialization on copy construction
gles2: fbo and viewport working
Merge pull request #1 from arturoc/gles2

almost everything working
small changes to ofxiPhone to get it to work with the latest @arturo's gles2 additions.
gles2: android start context as opengles2
gles2: android makefile, adds gles2 required library
Updated core addons paths to match spec @ https://github.com/benben/ofxAddonTemplate.
gles2: fix fbo for non opengles, fix rendering not working without calls to transformation matrices functions
Merge pull request #2 from arturoc/gles2

gles2 fixes from @arturo
gles2: fixed vbo texture coordinates + custom shaders working
androidShaderExample
updates
updating to newest head
android polygon example compatibility with gles2