kernel: Remove some no longer used options.
kernel: Remove some more unused kmalloc types.

M_MPSSAS
M_MPTUSER
M_NETGRAPH_ITEM
M_NWFSMNT
M_PDU
M_RDRAND
M_SMBDATA
M_SMBFSMNT
uname - Add -P and -PP for dports support

* Add options to generate dports-compatible ABI strings to stdout.
  Used by Makefile.usr.
Makefile.usr - Move fetch locations

* Move the bootstrap fetch from leaf:~marino to mirror-master

* Move the dports git fetch from ~marino's github to mirror-master
  (which currently clones it)
Merge branch 'master' into gsocdrm_alter