Add dbus-c++ and libiax2 in the git repository

libs/dbus-c++/AUTHORS

libs/dbus-c++/COPYING

libs/dbus-c++/ChangeLog

libs/dbus-c++/INSTALL

libs/dbus-c++/Makefile.am

libs/dbus-c++/NEWS

libs/dbus-c++/README

libs/dbus-c++/SConscript

libs/dbus-c++/TODO

libs/dbus-c++/autogen.sh

libs/dbus-c++/autom4te.cache/output.0

libs/dbus-c++/autom4te.cache/traces.0

libs/dbus-c++/config.guess

libs/dbus-c++/config.sub

libs/dbus-c++/configure.ac

libs/dbus-c++/data/Makefile.am

libs/dbus-c++/data/org.freedesktop.DBus.xml

libs/dbus-c++/dbus-c++-1-uninstalled.pc.in

libs/dbus-c++/dbus-c++-1.pc.in

libs/dbus-c++/debian/changelog