linux rtaudio libs + rtaudio as linux default
added return by reference to ofMaterials colors, etc
Fix sortingExample for Win32

* .dfont uncompatible with Windows
* reduce size by using system font
Fix error with bind() in VS2012

Fix #2158
of3dGraphics: optimize cached primitives
makefiles: crossplatform detection + remove default cflags for linux
optimize of3dGraphics
Merge pull request #2349 from rezaali/fix/MaterialReference

Fix/material reference
Merge pull request #2345 from danomatika/rtAudio-win_cb

rtAudio 4.0.12 udpate for  win_cb
Merge pull request #2348 from arturoc/feature-rtaudio4.0.12

linux rtaudio libs + rtaudio as linux default
Merge pull request #2353 from LeoColomb/Fix-ofxNetworks-VS2012

Fix error with bind() in VS2012
of3dGraphics.cpp: optimizations
Merge branch 'develop' of github.com:openframeworks/openFrameworks into develop
Revert "added return by reference to ofMaterials colors, etc"

This reverts commit d08358e449665a0211c60e3aa7ec5cb57b735e17.
stray cout 'setting hints'
ofParameter: fix for read only parameters not working on vs
Merge branch 'develop' of github.com:openframeworks/openFrameworks into develop
fixed printing of default module when empty string is logged, closes #2357; added printf-style calls to log level classes, closes #1165; default log level changed from OF to empty string so explictly setting a module to an empty string works as expected aka no module
Merge remote-tracking branch 'upstream/develop' into develop
makefiles: bring back -Wall and change order of flags so project cflags have more priority