Renamed lilypondproxytools. The new name is lilypondnametools.

The package hosues these three classes:

    LilyPondGrobNameManager
    LilyPondNameManager
    LilyPondSettingNameManager

It will probably be possible to collapse all three classes down to
LilyPondNameManager only. If that proves possible then it LilyPondNameManager
can move to systemtools and it will be possible to remove lilypondnametools.