Tests: Wait for disks to be free before using them for LVM.

There was a race between check-storage and storaged where we would try
to use a disk for a new volume group before storaged has noticed that
it is no longer used for the old volume group. In that case, that disk
would not be offered in the dialog, and the test would fail.

Closes #241

Reviewed-by: Stef Walter <stefw@redhat.com>
Makefile.am: Build main Makefile first

Helps speed up iterating through build or test failures

Reviewed-by: Marius Vollmer <marius.vollmer@redhat.com>
Tests: Work around LVM udev rules bug.

Closes: 244

Reviewed-by: Stef Walter <stefw@redhat.com>
Tests: Ignore more expected journal messages.
Makefile.am: Don't use libtool for producing binaries

Ding dong the witch is dead.

We don't produce libraries and don't need to get involved
in ugliness like libtool.

We don't need to install libcockpit at all.

Closes: #245
Closes: #239

Signed-off-by: Marius Vollmer <mvollmer@redhat.com>
Makefile.am: Don't use minify when in --enable-debug mode
Makefile.am: Don't add a separate Makefile.am for doc/ subdir

Run it as part of the single Makefile.am. Besides being better
practice, this fixes some strange issues with distcheck trying
to run inkscape.
Makefile.am: Add some more CLEANFILES to 'make clean'
Makefile.am: Quieten down the build process

When in silent rules mode, produce clean output for the build.
And also at the same time when silent rules are disabled, don't
hide the generation of certain files.