tools/gnulib: use exact directory copy for install

The python implementation of gnulib-tool
uses a hidden file as the independent main function.

A copy with glob ('*') does not include hidden files
at the top level directory, so use whole directory copy
instead and remove the patch for a non-hidden python file.

Ensure the directory does not already exist
by attempting uninstall first to remove it
and by not using "install" to create a directory.

Rename the clean target to uninstall, as it handles
the staging directory and not the build directory.

Removed:
 - 021-python-main.patch

Signed-off-by: Michael Pratt <mcpratt@pm.me>
Link: https://github.com/openwrt/openwrt/pull/16522
Signed-off-by: Robert Marko <robimarko@gmail.com>

tools/gnulib/Makefile

@@ -14,14 +14,14 @@ define Host/Configure
 endef
 
 define Host/Install
+	$(call Host/Uninstall)
 	$(INSTALL_DIR) $(1)/share/aclocal
 	$(INSTALL_DATA) $(HOST_BUILD_DIR)/m4/*.m4 $(1)/share/aclocal/
-	$(INSTALL_DIR) $(1)/share/gnulib
+	$(CP) $(HOST_BUILD_DIR)/ $(1)/share/gnulib/
-	$(CP) $(HOST_BUILD_DIR)/* $(1)/share/gnulib/
 	ln -sf ../share/gnulib/gnulib-tool $(STAGING_DIR_HOST)/bin/gnulib-tool
 endef
 
-define Host/Clean
+define Host/Uninstall
 	rm -rf $(STAGING_DIR_HOST)/bin/gnulib-tool $(STAGING_DIR_HOST)/share/gnulib
 endef
 

tools/gnulib/patches/021-python-main.patch

@@ -1,15 +0,0 @@
---- /dev/null
-+++ b/gnulib-tool-main.py
-@@ -0,0 +1,4 @@
-+from pygnulib import main
-+
-+if __name__ == '__main__':
-+    main.main_with_exception_handling()
---- a/gnulib-tool.py
-+++ b/gnulib-tool.py
-@@ -157,4 +157,4 @@ fi
- profiler_args=
- # For profiling, cf. <https://docs.python.org/3/library/profile.html>.
- #profiler_args="-m cProfile -s tottime"
--exec python3 $profiler_args "$gnulib_dir/.gnulib-tool.py" "$@"
-+exec python3 $profiler_args "$gnulib_dir/gnulib-tool-main.py" "$@"