Sync dfa with grep.
Fixes from GNULIB for Mac OS X mixed case matching.
Improvement in helpers/quoteconvert2.sh.
Indexing improvements.
Fix thousands separator problems and update doc.
Update ChangeLog for previous commit. Oops.
Merge branch 'gawk-4.1-stable'
Build fix for BSD systems.
Merge branch 'gawk-4.1-stable'
Deal with Mac OS X .dSYM directories.
Minor edits in NEWS.
Bump version for test release.
Merge branch 'gawk-4.1-stable'
Fix dfa for systems without locales.
Bump version for beta tarball.
Merge branch 'gawk-4.1-stable'
Bump UPDATE_YEAR in main.c.
Merge branch 'gawk-4.1-stable'
Irix fix for dfa.c.
Fix in .gitignore.