Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFH (r254407, r254960, r255371): misc cleanup
MFH (r255386): make libssh private
MFH (r255369, r255376, r255393, r262530): import OpenPAM Nummularia

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

This commit was generated by cvs2svn to compensate for changes in r117610,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenPAM Dogwood.