Try to put all the version stamps into common version_base.h
and version_stamp.h header files. All the source programs then
get their version from these header files.
Also handle the version stamps in the man pages by using the
version_*.h header file contents to edit the version strings
in the man page title bar markers.
- Add missing dependency of configure on aclocal.m4.
- Remove config stamp files in make distclean (and fix another for
loop in base make distclean that I missed)
- Add stamp files to .gitignore
Having our users manually edit their .git/info/exclude is
tedious and this information belongs in the code repository.
So this patch creates a file .gitignore that contains the
appropriate information to exclude all the normal files
that should never be tracked in git..