rewrite ofToDataPath and associated functions to use Poco::Path
default working directory is now set at app start rather than in folder operations
cleaned ofSetWorkingDirectoryToDefault
resolve deviations in cwd. keep relative paths
fixed issue when input path to ofToDataPath already includes data path
fixed lame bug with absolute paths
updated comments of ofToDataPath
updated comments of ofToDataPath
fixed possible issue with blank datapaths when stripping trailing slash in ofToDataPath
fix to cone for use with getMeshForIndices and warning in getMeshForIndices if an index is less than zero
fixes for ios warnings in xcode

- fix for ofxiOS-Info.plist warning
- fix for Default-568h@2x.png missing warning
added getMeshForIndices with only 2 args in ofMesh
cleaned up debug messages
merged changes to ofToDataPath using poco into current develop branch
use static pointer rather than reference to avoid issues when accessing datapath on exit
static on defaultWorkingDirectory
Merge branch 'develop' of https://github.com/openframeworks/openFrameworks into feature-3dGraphics
Changed endIndex in ofMesh:: setColorForIndices and ofMesh::getMeshForIndices to be last index and not total. Changed appropriate variables in of3dPrimitives to account for change in indices.
ofTTF & ofBitmapString: set vbos to GL_STREAM_DRAW
ofVbo: static method to disable VAOs