Add mvn_file test for absolute paths and prefix
TODO: remove: add test for mvn_file prefix
xmv_config.add_custom_option fails on incorrect input
update mvn_config manpage and help
TODO: remove: mvn_config support for XML contents
Add tests for XML content in mvn_config
[xmvn_config] add support for optional rule in add_package_mapping
[mvn_build] Do not install artifacts with classifiers in singleton mode
[test] Update data for singleton packaging
maven.prov: provide artifacts with extensions
TODO: more tests for maven.prov
Add tests for extensions in maven.prov
Revert "maven.prov: provide artifacts with extensions"

The problem (rhbz#1007203) is in fact in maven_depmap.py, not in maven.req.
maven_depmap.py should add <extension> to both maven and local part of
generated depmap.

This reverts commit 859652ea7599fedef907d61494873efbd2ac6afa.
maven_depmap.py: add <extension> also to local part
Add some tests for maven_depmap.py
Fix maven.prov tests to reflect current behaviour