Added InterfaceGl::Options::key() to accompany keyIncr, keyDecr. Minor code reordering in impl. Fixes #424
clear out stored callbacks in InterfaceGl::clear()
Merge pull request #438 from cinder/interfacegl_updates

Interfacegl updates
in Cocoa URL loader implementation, changed int datatypes to off_t datatypes to prevent int overflow when downloading large files
adding new audio project settings for vc2012 / x64 target
added isnan implementations for vs2012. Don't define isfine() on vs2013, since it is already defined by math.h there.
fix spacing
Merge pull request #446 from cinder/vs2012_isnan

define std::isnan for vs2012
Added note that <VC12 implementations of std::round variants are not C99 compliant
Merge pull request #441 from daanvanhasselt/cocoa-url-loader-fix

in Cocoa URL loader implementation, changed int datatypes to off_t datat...
Merge branch 'dev' of github.com:cinder/Cinder into dev
Tweaks to prevent warnings on UrlImplCocoa
Standardizing on NDEBUG macro in Release builds for Cinder itself and TinderBox templates