bump version to v1.15.1dev
bump version to v1.16.0dev
add debug logging in modpath_extensions_for
fix path_to_top_of_module_tree to consider multiple paths to the top of the module tree
add unit test for checking load statements in imkl module under HierarchicalMNS
fix added unit test for Tcl-based module tools: don't use test modules that unload recursively and make 'purge' fail
fix broken tests
cleanup in GCC test module
fix typo in GCC test module
fix remarks
bump version to v1.15.1, update release notes
extend release notes w.r.t. PR #1049
Merge branch 'v1.15.x'