Minor fixes for libc++ compatibility
MEX: change Makefile to allow multiple renderers
Move generic helper functions for mex-files to APF
MEX: use helper functions from apf/mextools.h
Change copyright year to 2014
MEX: create class for common functionality
Add missing includes
MEX-files for binaural, VBAP and AAP renderers
parameter_map: add constructor from std::map
mextools: add conversion from struct to std::map of strings
MEX: use struct as parameter to 'init'
MEX: add WFS renderer
MEX: remove dependency generation

... because it doesn't work anyway!
MEX: print renderer name after initialization
MEX: allow chained commands for 'source' and 'process'
MEX: change 'source' sub-commands to top-level commands
mextools: add a few more helper macros
MEX: using more macros