Move auxiliary build scripts to build-aux subdirectory

* copyright-year-gen: Rename to build-aux/copyright-year-gen.
* file-date-gen: Rename to build-aux/file-date-gen.
* git-set-file-times: Rename to build-aux/git-set-file-times.
* git-version-gen: Rename to build-aux/git-version-gen.
* gitlog-to-changelog: Rename to build-aux/gitlog-to-changelog.
* Makefile.am (EXTRA_DIST): Rename copyright-year-gen to
build-aux/copyright-year-gen, file-date-gen to build-aux/file-date-gen,
and git-version-gen to build-aux/git-version-gen.
($(srcdir)/ChangeLog): Rename gitlog-to-changelog to
build-aux/gitlog-to-changelog.
* ci/run-build-and-tests.sh: Rename git-set-file-times to
build-aux/git-set-file-times.
* configure.ac: Rename git-version-gen to build-aux/git-version-gen,
copyright-year-gen to build-aux/copyright-year-gen, and
file-date-gen to build-aux/file-date-gen.
* maint/make-dist: Rename git-set-file-times to
build-aux/git-set-file-times.
* maint/update_copyright_years.sh: Rename git-set-file-times to
build-aux/git-set-file-times, gitlog-to-changelog to
build-aux/gitlog-to-changelog.

2 files changed, 3 insertions, 3 deletions

diff --git a/maint/make-dist b/maint/make-dist
index c8d4e7e89..25b201d13 100755
--- a/maint/make-dist
+++ b/maint/make-dist
@@ -19,7 +19,7 @@ git clone -q -n -s .git "$distdir"
 cd $distdir
 git checkout -f "$id"
 
-./git-set-file-times
+./build-aux/git-set-file-times
 
 ./bootstrap
 
diff --git a/maint/update_copyright_years.sh b/maint/update_copyright_years.sh
index 4079b1d4b..0e1c811b6 100755
--- a/maint/update_copyright_years.sh
+++ b/maint/update_copyright_years.sh
@@ -24,8 +24,8 @@ LC_TIME=C; export LC_TIME
 
 # These files are only imported into strace and not changed.
 # Remove them from the list once they have been changed.
-IGNORED_FILES="git-set-file-times
-gitlog-to-changelog
+IGNORED_FILES="build-aux/git-set-file-times
+build-aux/gitlog-to-changelog
 ${ADDITIONAL_IGNORED_FILES-}"
 
 log()   { [ "$VERBOSE" -lt 1 ] || printf '%s\n' "$*"; }