musescore/MuseScore — pull request #939 by mgavioli (2014-05-29 16:51:16+00:00)
Title: Removing default usages of the PERC2 and TAB2 clefs.

- PERC2 is no longer supported and always rendered as PERC; using it as default, as in importxml.cpp, is obsolete.
- Make TAB the default tab clef, while TAB2 (the serif variant) only remains as a stylistic variant.