Problem with pgtcl on HP

Just want to share in case you want to make a change
in the code, or perhaps tell us that we didn't do the right thing.

At some point we needed to add -DTCL_THREADS and -D_REENTRANT
to the makefiles and then we ran into a problem with pgtcl library.

This seems to be HP specific (HP-11) and happened on 7.3.2 and 7.3.4
Depening on the environment attempt to either load or unload
this library results in a core dump (signal 11)
We tracked problem to this line in pgtcl.c:  putenv ("PGCLIENTENCODING=UNICODE");
Changing this to   Tcl_PutEnv ("PGCLIENTENCODING=UNICODE");
seems to be a good fix, so far we are not seeing any problems.

Mike.