RethinkDB 1.6.1

Closes #20607.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
subversion: remove unicode patch

Patch no longer applies.

Closes #20609.
postgresql: Enable LDAP and PAM build options

Closes #20603.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
MacVim: apply ENV.clang on Lion too

Closes #20604.
MacVim: only need font when building icons

Closes #20606.
HDF5: add support for fortran2003

Closes #18317.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>