Removes man3 section and adds contributor list

Seems that there are no man for section 3 anymore. Removed install
snippet from PKGBUILD.
Added list of PKGBUILD contributors in header.
Explicitly set the user option for ssh connections

Fixes #7170
Merge pull request #7176 from leucos/devel

Arch PKGBUILD fixes : removes man3 section and adds contributor list