Use protocol-relative link to specific email, and switch to using
permanant link to it.


git-svn-id: svn+ssh://svn.freebsd.org/doc/head@45652 c2e8774f-c49f-e111-b436-862b2bbc8956
Simplify four manpage links to remove unnecessary parameters, and link
to the most default version of each man page rather than hard-coding the
version from 6.0.  The pae(4) man page is only available on i386, so that
needs to be stated explicitly.

Use &cgibase; rather than hardcoding http://www.freebsd.org/cgi/


git-svn-id: svn+ssh://svn.freebsd.org/doc/head@45653 c2e8774f-c49f-e111-b436-862b2bbc8956
Use &cgibase; rather than hardcoding http://www.freebsd.org/cgi/

There are a few remaining explicit uses of http://www.freebsd.org/cgi/
but all of these appear to be outdated e.g. pointing to GNATS) and need
updating.

Switch &cgibase; to use protocol-relative links, rather than hardcoding
http.  Switch two others (ftpbase and ftpbaseerrata) whilst here.


git-svn-id: svn+ssh://svn.freebsd.org/doc/head@45654 c2e8774f-c49f-e111-b436-862b2bbc8956