libosip2-3版本的osip源代码

								Common Install process for linux/UNIX.								1: compile/install libosip first.								  $> tar -xvzf libosip2-x.x.x.tar.gz				  $> CFLAGS="-I/usr/local/include/" ../configure				  $> make				  $> make install      (as root...)								2: compile/install eXosip								  $> tar -xvzf libeXosip2-x.x.x.tar.gz				  $> CFLAGS="-I/usr/local/include/" ../configure				  $> make				  $> make install      (as root...)