net-fs/autofs: Clean up ebuild

net-fs/autofs: Clean up ebuild

- Use BDEPEND
- Remove unnecessary REQUIRED_USE
- Remove long dead patch set handling
- Check for new AUTOFS_FS
- Use archive.org for dead homepage
- Remove unnecessary multilib inherit
- Don't install empty /run
- Strip EnvironmentFile= line from .service file (592334)
	- It only provided $OPTIONS (unset, can be set by user easily)
	  and USE_MISC_DEVICE which is not used by the .service file

Closes: https://bugs.gentoo.org/592334
Signed-off-by: Matt Turner <mattst88@gentoo.org>