move to osmo-mgw.git: osmo-bsc_mgcp and libmgcp as libosmo-legacy-mgcp

Rewire build and includes to libosmo-legacy-mgcp.

Drop osmo-bsc_mgcp and related python tests, now found in osmo-mgw.git.

libosmo-legacy-mgcp is installed from osmo-mgw, hence add the dependency to
jenkins.sh (so far using the pre_release branch).

Change-Id: Ic99d681759edce11564da62500c2aac5cf5fffe2
52 files changed