set API versions back to 0

Roll back the LIBVERSIONs to 0:0:0 -- the bumps so far have been confused and
wrong. Let's start over from scratch with API-current of 0 while we still can.

Rename the mgcp_client debian .install files back to 0 to match the API
version.

Change-Id: I3d81853f811f412b186621c3657bab6af397a980
diff --git a/src/libosmo-mgcp-client/Makefile.am b/src/libosmo-mgcp-client/Makefile.am
index 0416081..e644862 100644
--- a/src/libosmo-mgcp-client/Makefile.am
+++ b/src/libosmo-mgcp-client/Makefile.am
@@ -22,7 +22,7 @@
 # This is _NOT_ the library release version, it's an API version.
 # Please read Chapter 6 "Library interface versions" of the libtool
 # documentation before making any modification
-MGCP_CLIENT_LIBVERSION=1:0:1
+MGCP_CLIENT_LIBVERSION=0:0:0
 
 lib_LTLIBRARIES = \
 	libosmo-mgcp-client.la \