Log Message:
Update to 1.2.7.

1.2.7:
This release features a lot of cleanups, both from manual inspection and
from automated static code analysis, along with a couple bug fixes and
various documentation & build configuration improvments.

1.2.6:
This minor release converts the libxtrans API documentation from troff
to DocBook/XML and updates it for the current state of the code.

It also includes some minor bug fixes, and of course, the usual recent
collection of build configuration improvements and janitorial cleanups.