Log Message:
-update to 2.16.1
 changes:
 -bugfixes
 -Prefer xulrunner over mozilla
 -translation updates
-use a fallback for man: lookups if neither a "manpath" binary nor
 a MANPATH env var are present, as a first fix for PR pkg/34881 by
 David H. Gutteridge
 (This can be done better, but for now I'd like just prevent the crash.)