debug++
have (1) and (2) mostly figured out. Need to clean up the changes for those yet.
Added interactive support.
attempt at readline support
More in-depth readline support
Changed USE_READLINE ifdefs to _NO_LIBREADLINE.
Added readline support to configure.
Renamed __AddScriptLine() to simply AddScriptLine().
Renamed __cgetc() to _buffered_cgetc().
Added -ltermcap to other libraries possibly needed by libreadline.
Allow build --without-libxml
Merge pull request #461 from JoesCat/master

Allow build --without-libxml
Added separate test for -lreadline with -ltermcap and without
Added cleanup for when we hit EOF in an interactive session.
added missing 'else'
Set linebuf to NULL after we free it, just in case.
Merge pull request #442 from blipvert/readline

Readline support for native scripting — Please review
Save this to fix for a future date

See issue https://github.com/fontforge/fontforge/pull/461 plus the earlier
https://github.com/fontforge/fontforge/pull/442 (1) for more info.
Merge remote-tracking branch 'upstream/master'
Put it back way it was