- Makefile.am: Fix the dist target to include all necessary files.

- Makefile.am: Fix the dist target to include all necessary files.
- po/fr.po: New French translation.  (-> stable!)
- Add the new options to Muttrc.in.
- regex.c, configure.in: include config.h from regex.c, and handle
  alloca in a more intelligent way than before. (Currently, we just
  mis-handle it.)
  Port this to stable and test it!
- po/cs.po: update cs.po.
- po/de.po, po/nl.po: updated versions from Roland and Boris.
- pager.c: Vikas' grok_ansi fix.
- po/Makefile.in.in: keymap_defs is always in po/..  - from Lars
  Hecking.