Update to 0.45.

Add a patch from upstream to avoid segfaulting on null PQ options.

- 0.45 | 2013-03-10

  - support for "make installcheck"

	This does "make check" at its core, so the same env vars apply.
	Obviously, you should do "make install" first for sane results.

  - bootstrap tools upgraded
    - GNU Autoconf 2.69
    - GNU Automake 1.13.1
    - Guile-BAUX 20121120.1242.e233fad
    - SNUGGLE 0.2
    - GNU Texinfo 5.0
Updated databases/guile-pg to 0.45