* INSTALL: Prefer './configure FOO=BAR' to 'FOO=BAR ./configure'.
* INSTALL.REPO: pkg-config is no longer required to build from
the repository.
* autogen.sh: Don't check for pkg-config.
(progs): Remove pkg-config.
(pkg_config_min, AUTORECONF_ENV, env_space, ACLOCAL_PATH):
Remove. All uses removed.
* m4/pkg.m4: New file, built by admin/merge-pkg-config.
* configure.ac: Remove unnecessary m4_pattern_forbid of ^PKG_ and
an AC_ARG_VAR of PKG_CONFIG_PATH. pkg.m4 does that for us.
(EMACS_CHECK_MODULES): Remove workaround for old pkg-config bug,
as we use pkg.m4 from a newer pkg-config.
* admin/merge-pkg-config: New script.
* admin/notes/copyright: Update for m4/*.m4, in particular m4/pkg.m4.
* etc/NEWS: Prefer './configure FOO=BAR' to 'FOO=BAR ./configure'.
* etc/PROBLEMS (Build-time-problems): Remove pkg-config problem
that is no longer an issue.
* nt/INSTALL: Remove no-longer-needed notes about pkg-config.
These are old copies of online information that is not Emacs-specific.
* etc/CENSORSHIP, etc/GNU, etc/LINUX-GNU, etc/THE-GNU-PROJECT, etc/WHY-FREE:
Replace contents with pointers to www.gnu.org or emacs.info, mark obsolete.
* src/callproc.c (init_callproc): In etc, look for NEWS rather than GNU.
* lisp/startup.el (fancy-startup-text):
* lisp/help.el (describe-gnu-project): Visit online info about GNU project.
* doc/emacs/help.texi (Help Files): Update C-h g description.
* doc/misc/efaq.texi (Informational files for Emacs): Do not mention etc/GNU.
* admin/notes/copyright: Remove references to these files.
* etc/MACHINES, etc/NEWS.19: Replace references to these files.
The class of problems that this was designed to detect, namely .elc
files getting corrupted by being passed around by email via uuencode
or somesuch, has not been a relevant concern for many years.
* lib-src/test-distrib.c, lib-src/testfile: Remove.
* lib-src/Makefile.in (DONT_INSTALL): Remove test-distrib.
(test-distrib${EXEEXT}): Remove rule.
* make-dist: Do not distribute lib-src/testfile.
* admin/quick-install-emacs (AVOID): Remove testfile and test-distrib.
* INSTALL, etc/PROBLEMS, admin/notes/unicode:
Remove references to test-distrib and testfile.
RCS -> CVS -> Bzr -> Git. And (as Stefan Monnier reports) "GNU Arch
was semi-officially used for a while between CVS and Bzr, tho not for
the main branch."
* admin/CPP-DEFINES (HAVE_CLOSEDIR, HAVE_DIRENT_H): Remove.
* admin/notes/copyright: Adjust to src/ndir.h -> nt/inc/dirent.h renaming.
* configure.ac: Do not check for dirent.h or closdir.
* nt/inc/dirent.h: Rename from ../src/ndir.h, with these changes:
(struct dirent): Rename from struct direct. All uses changed.
* nt/inc/sys/dir.h: Remove.
* src/dired.c: Assume HAVE_DIRENT_H.
(NAMLEN): Remove, replacing with ...
(dirent_namelen): New function. All uses changed. Use the GNU macro
_D_EXACT_NAMELEN if available, as it's faster than strlen.
(DIRENTRY): Remove, replacing all uses with 'struct dirent'.
(DIRENTRY_NONEMPTY): Remove. All callers now assume it's nonzero.
* src/makefile.w32-in (DIR_H): Remove. All uses replaced with
$(NT_INC)/dirent.h.
($(BLD)/w32.$(O)): Do not depend on $(SRC)/ndir.h.
* src/ndir.h: Rename to ../nt/inc/dirent.h.
* src/sysdep.h (closedir) [!HAVE_CLOSEDIR]: Remove.
Do not include <dirent.h>; no longer needed.
* src/w32.c: Include <dirent.h> rather than "ndir.h".
Fixes: debbugs:12958
