- automatic installation of Linux man page
- compress man page if gzip is present on system
- updated Linux man page
- tidied Linux man page
- Add .MSCZ and .MSCX to MIME database on Linux
- new Makefile targets to uninstall on Linux
- add MusicXML files to MIME database on Linux
- install mimetype icons on Linux
- changed gzip syntax to support older versions for Linux man page compression
- replaced PNG icons with SVGs
- fix#59196: new MSCZ and MSCX icon designs (SVG)
- never compress man pages on OpenBSD
