Log Message:
Update to 1.2.1:

1.2.1:
This release includes more documentation cleanups & improvements,
fixes for issues found by static analysis & compiler warnings, and
of course some build configuration improvements.

1.2.0:
This release fixes a couple of bugs and includes a lot of work
from multiple people on the documentation to convert the ancient
troff scrolls to DocBook/XML.   It also includes the usual recent
rounds of build configuration improvements and janitorial cleanups.