Simplify fstrace message catalog and support non-dest installation

Simplify fstrace message catalog and support non-dest installation

fstrace was searching for its message catalog first through the normal
NLS message catalog search paths and then falling back on the client
configuration directory.  This, however, is neither a traditional
message catalog for internationalization nor is it a configuration file.

Instead, search for the message catalog only in a C directory under
AFSDIR_CLIENT_DATA_DIRPATH, which is for architecture-independent data,
and simplify the code.

Now that we have a standard location for the message catalog, install
it with make install as well as make dest.

Reviewed-on: http://gerrit.openafs.org/92
Verified-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Reviewed-by: Derrick Brashear <shadow@dementia.org>