Merge dfa.c from grep.
Merge branch 'gawk-4.1-stable'
Add --include long option and tests to make sure that --load and --include work.
Merge branch 'gawk-4.1-stable' to get --include to work.
Readdir test should work on filesystems lacking type info in the dirent.
Merge branch 'gawk-4.1-stable' to fix readdir test.