-- Changed exit status of each nmh command's -version and -help
- switches from 1 to 0.
-- The following environment variables were deprecated in nmh 1.5
- and are removed from this release:
- MHPOPDEBUG (use -snoop command line switch instead)
- MM_NOASK (use -nolist and -nopause command line switches instead)
- NOMHNPROC (use -nocheckmime command line switch instead)
- FACEPROC (undocumented faceproc feature removed)
-- Changed repl and dist default to -noatfile. The default of -atfile
- was deprecated in nmh 1.5. If there are no requests to maintain
- -atfile, it will be removed in the future.