gnulib: Copy hidden files to staging area as well

newer gnulib-tool wrappers try to run a sibling Python
launcher file, .gnulib-tool.py, when Python 3 is available.
In current gnulib, that file is a real part of the tree,
and gnulib-tool will exec "$prog.py" in that mode

Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-oe/recipes-support/gnulib/gnulib_202601.bb

@@ -20,6 +20,7 @@ SRC_URI = "git://git.savannah.gnu.org/git/gnulib.git;branch=stable-${PV};protoco
 do_install () {
     install -d ${D}/${datadir}/gnulib
     cp --no-preserve=ownership --recursive ${S}/* ${D}/${datadir}/gnulib/
+    cp --no-preserve=ownership --recursive ${S}/.gnulib-tool.py ${D}/${datadir}/gnulib/
     cp --no-preserve=ownership --recursive ${S}/.git ${D}/${datadir}/gnulib/
 }