[01b77111e5]: Small fixes relating to this bug. In particular, the package name
mapping was not being distributed, and there were some small problems with what
the mappings were and how they were applied. Also prevented external URLs from
ending with a '.'; that's vanishingly rare...
Bump tcltest version to 2.3.6 (should have been done just before the 8.5.15 release, just as in Tcl 8.6.1). 
Don't fix eol-style for Makefile.in in "make dist", if the file system is case-insensitive/case-preserving.
Don't fix eol-style for Makefile.in in "make dist", if the file system is case-insensitive/case-preserving.
Workaround for [414d10346b]: tcl 8.5.15/8.6.1(threaded build) hangs in exec on HP-UX
Workaround for [414d10346b]: tcl 8.5.15/8.6.1(threaded build) hangs in exec on HP-UX
merge trunk