Update the sshare.1 man page making it consistent with sacctmgr.1.
Revert "Update the sshare.1 man page making it consistent with sacctmgr.1."

This reverts commit 3464295e143906978c06d1411421e820b399cb15.
Change the sshare.1 man page to better describe CPURunMins.
Update sshare.1 man page making it consistent with sacctmgr.1.
Merge branch 'slurm-2.6'