Clean up the libtool importer a bit. Add a context so we can use it

Clean up the libtool importer a bit. Add a context so we can use it

2008-10-29  Johan Dahlin  <jdahlin@async.com.br>

    * giscanner/libtoolimporter.py:
    * giscanner/sourcescanner.py:
    Clean up the libtool importer a bit. Add a context so we
    can use it through a with statement.
    Don't just look in the current directory, look in the whole
    sys.path.

svn path=/trunk/; revision=830