Manager is now a singleton

admin/acinclude.m4.in

configure.ac

src/Makefile.am

src/audio/Makefile.am

src/audio/audiocodec.cpp

src/audio/audiolayer.cpp

src/audio/audiolayer.h

src/audio/audiortp.cpp

src/audio/audiortp.h

src/audio/dtmfgenerator.cpp

src/audio/tonegenerator.cpp

src/audio/tonegenerator.h

src/call.cpp

src/call.h

src/error.cpp

src/error.h

src/gui/Makefile.am

src/gui/guiframework.cpp

src/gui/guiframework.h

src/gui/qt/Makefile.am