Add rudimentary config.test support when configuring modules.

Add rudimentary config.test support when configuring modules.

An extra script is added (qtmodule-configtests) which is currently
invoked from syncqt (with some derived parameters passed to it).

The module can optionally have an entry in the module's sync.profile
file in the form of a perl map of "test name" => parameters.  Tests
can print an advisory message if they fail (e.g. "Install this
SDK/dev package"), or abort the syncqt process (e.g. mandatory
prereq missing).  Also, if the test has a "requires(foo)" line
that results in it being skipped, this is also supported.

Change-Id: Ic3c820a488a0992c944994d4d7dc283da36742d6
Reviewed-on: http://codereview.qt.nokia.com/928
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Sarah Jane Smith <sarah.j.smith@nokia.com>
Reviewed-by: Marius Storm-Olsen <marius.storm-olsen@nokia.com>