automake requires all files to be installed inside the prefix. bash-completion
requires the files to be in a specific directory given by a pkg-config file.
As such those two are having incompatible requirements and we just disable
bash-completion installation for the time being when running "make distcheck".
Nonetheless things like "make install" with e.g. a DESTDIR or a private
installation into a user's directory will fail as in both cases the
bash-completion data would be tried to be installed system-wide.
Summary: + And be a little smart about it.
Test Plan: New feature, working, not testing bash completion
Reviewers: tsaunier
Differential Revision: http://internal.opencreed.com:8888/D25
Those are test with real media files, they are run separetely from other
unit tests using the make check-integration command (can be done from
the toplevel directory)
