Log Message:
deforaos-mixer: update to 0.4.1

Changes since 0.4.0:
- support for compilation modes (as provided by DeforaOS configure)
- updates to the helper scripts from DeforaOS configure
- fixes building with the latest version of DeforaOS libSystem
- new location for the .desktop file

This also makes use of a new helper for DeforaOS configure, found in
devel/deforaos-configure/deforaos-configure.mk.