Bug correction.
Remove alaw header from git repository.
Add GPL license in ulaw.cpp

!!!!!!!!!!!  Must have libspeex1 and libspeex1-dev installed

The previous commit brought a segmentation fault when launching the client.
When the daemon is lauched separatly, it uses a wrapper script, but it doesn't when the client start the daemon.
SO the LD_LIBRARY_PATH was ignored and the daemon couldn't find the dynamic library for the codecs.

Codecs dynamic libraries are created at the compilation time if they don't exist and copied in /usr/lib/sflphone/codecs at the installation

Seg fault on opening the config window

Conflicts:

	sflphone-gtk/src/configwindow.c

Use instead the standard library gsm (libgsm1, libgsm1-dev).
cf www.sflphone.org/index.php?file=Dependencies.txt

After intalling the libraries libgsm1 and libgsm1-dev, you can create the shared library codec_gsm.so with:
gcc -shared -o codec_gsm.so gsmcodec.cpp -lgsm

Audio calls with ilbc codecs still not tested.