Bug fixes: ---------- * Find git more intelligently, because build_prefix isn't always on PATH #2196 * Fix up assorted RPM skeleton issues #2196 * Fix and test "numpy x.x" recipes #2198 * Fix and test --skip-existing. Ensure that it also works with --croot. #2200 * Fix and test "python x.x" recipes #2201 * Fix inappropriate insertion of variant versions that led to conflicts (for example, numpy) #2202