build: add several build- and release-related gnulib modules

* bootstrap.conf (gnulib_modules): Add announce-gen update-copyright
do-release-commit-and-tag git-version-gen gnu-web-doc-update
gnupload maintainer-makefile useless-if-before-free

.gitignore

@@ -3,6 +3,7 @@
 *~
 .deps
 /ABOUT-NLS
+/GNUmakefile
 /INSTALL
 /aclocal.m4
 /autom4te.cache
@@ -13,6 +14,7 @@
 /config.status
 /configure
 /configure.ac
+/maint.mk
 /stamp-h1
 ABOUT-NLS
 ChangeLog

bootstrap.conf

@@ -19,23 +19,29 @@
 # gnulib modules used by this package.
 gnulib_modules='
 alloca
+announce-gen
 atexit
 binary-io
 btowc
 closeout
 dirent
 dirname
+do-release-commit-and-tag
 error
 exclude
 fnmatch
 getopt-gnu
 getpagesize
 gettext
+git-version-gen
 gitlog-to-changelog
+gnu-web-doc-update
+gnupload
 hard-locale
 isdir
 locale
 malloc
+maintainer-makefile
 mbrlen
 mbrtowc
 memchr
@@ -56,6 +62,8 @@ strtoull
 strtoumax
 sys_stat
 unistd
+update-copyright
+useless-if-before-free
 wchar
 wcrtomb
 wctype

build-aux/.gitignore

@@ -1,10 +1,19 @@
+announce-gen
 config.guess
 config.rpath
 config.sub
 depcomp
+do-release-commit-and-tag
+gendocs.sh
+git-version-gen
 gitlog-to-changelog
+gnu-web-doc-update
+gnupload
 install-sh
 link-warning.h
 mdate-sh
 missing
 texinfo.tex
+update-copyright
+useless-if-before-free
+vc-list-files

doc/.gitignore

@@ -1,5 +1,6 @@
 egrep.1
 fgrep.1
+gendocs_template
 grep.info*
 stamp-vti
 version.texi