Add all bindings as a submodule of the main vlc git tree.

Some basic information about git submodule:
 * by default the submodules are not clone
 * by default the url for the submodules are git:// and not ssh://, the
developpers must change this (just uncomment the right line in .gitmodules)
to be able to commit to the bindings.

Git commandes:
 * git submodule init => intialize the submodules
 * git submodule status => status of the submodules
 * git submodule update => update all submodules

.gitmodules

+[submodule "bindings/libvlcpp"]
+	path = bindings/libvlcpp
+	url = git://git.videolan.org/vlc/bindings/libvlcpp.git
+#	url = git@git.videolan.org:vlc/bindings/libvlcpp.git
+[submodule "bindings/jvlc"]
+	path = bindings/jvlc
+	url = git://git.videolan.org/vlc/bindings/jvlc.git
+#	url = git@git.videolan.org:vlc/bindings/jvlc.git
+[submodule "bindings/python"]
+	path = bindings/python
+	url = git://git.videolan.org/vlc/bindings/python.git
+#	url = git@git.videolan.org:vlc/bindings/python.git
+[submodule "bindings/phonon"]
+	path = bindings/phonon
+	url = git://git.videolan.org/vlc/bindings/phonon.git
+#	url = git@git.videolan.org:vlc/bindings/phonon.git

jvlc @ 969cee2a

+Subproject commit 969cee2a12b6ffc9e48ab50506abb85e0530f217

libvlcpp @ 377ad1ce

+Subproject commit 377ad1ce94fea853329f92721489a353b15ad8c6

phonon @ 918b7a8d

+Subproject commit 918b7a8d8892f480bd162e56e87be6dfea6e262e

python @ 391f6383

+Subproject commit 391f6383e9568209c3242468c4179645708bdc39