c.f. 31531: complete xcf files for image manipulation packages
31545: Use of FD_CLOEXEC to remove possibility of fd reuse.
File descriptors of mmap'd dump files are closed if and only if
an exec is performed.
31549: Fix third problem with file descriptor management.
Replace ad-hoc subsh_close file descriptor for pipe management with the new
job-based addfilelist() mechanism.
31558: name of qemu executable changed in completion.
31559: Fix history line problem with aliases and comments
unposted: fix previous commit: ihwend -> hwend
31750: fix for HISTREDUCEBLANKS option.
Don't truncate line after marked words if there's more
non-white-space text, which is probably comments.
31571: Completion/Unix/Command/_vcsh: Update
31572: Completion/Debian/Command/_linda: Deleted
31574: alternative fix for bad fd if no FD_CLOEXEC.
Remove dump records more consistently in that case.
31756: further make completion improvements.
ake care of mutually exclusive options.
Add _description using $state_descr.
Add completions for --debug=flag.
Fix typo (pointed out by Daniel Shahaf).
31592: improve documentary for handling of named directories.
Minor changes of phrasing.
17591: fix error message for invalid fd in print -u
hashtable.c: win32/cygwin: hash only exe/bat/cmd for pure windows paths
hashtable.c: win32/cygwin: hash only the command without .exe appended
cygwin: replace cygwin_conv_to_posix_path() with cygwin_conv_path();

cygwin_conv_to_posix_path is deprecated and not available in
latest cygwin64 builds.