patch 9.1.0846: debug symbols for xxd are not cleaned in Makefile

Problem:  debug symbols for xxd are not cleaned in Makefile
Solution: remove  xxd.dSYM in xxds Makefile, call xxd clean target from
          main Makefile (Yee Cheng Chin)

Remove xxd.dSYM folder when calling `make clean`. On macOS, when
compiling with debug info, clang will generate a "dSYM" folder that
contains debug symbols for the executable because unlike Linux, the
DWARF data is not embedded in the executable itself.

closes: #16010

Signed-off-by: Yee Cheng Chin <ychin.git@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/Makefile b/src/Makefile
index c7ba9fb..7bb0a7e 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2882,9 +2882,9 @@
 # Clean up all the files that have been produced, except configure's.
 # We support common typing mistakes for Juergen! :-)
 clean celan: testclean
-	-rm -f *.o core $(VIMTARGET).core $(VIMTARGET) vim xxd/*.o
+	-rm -f *.o core $(VIMTARGET).core $(VIMTARGET) vim
 	-rm -rf objects
-	-rm -f $(TOOLS) auto/osdef.h auto/pathdef.c auto/if_perl.c auto/gui_gtk_gresources.c auto/gui_gtk_gresources.h auto/os_haiku.rdef
+	-rm -f auto/osdef.h auto/pathdef.c auto/if_perl.c auto/gui_gtk_gresources.c auto/gui_gtk_gresources.h auto/os_haiku.rdef
 	-rm -f conftest* *~ auto/link.sed
 	-rm -f testdir/opt_test.vim
 	-rm -f $(UNITTEST_TARGETS)
@@ -2894,6 +2894,7 @@
 	if test -d $(PODIR); then \
 		cd $(PODIR); $(MAKE) prefix=$(DESTDIR)$(prefix) clean; \
 	fi
+	cd xxd; $(MAKE) clean
 
 # Make a shadow directory for compilation on another system or with different
 # features:
diff --git a/src/version.c b/src/version.c
index 22d1d26..a1b7586 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    846,
+/**/
     845,
 /**/
     844,
diff --git a/src/xxd/Makefile b/src/xxd/Makefile
index d08af7a..5937f13 100644
--- a/src/xxd/Makefile
+++ b/src/xxd/Makefile
@@ -5,3 +5,4 @@
 
 clean:
 	rm -f xxd xxd.o
+	rm -rf xxd.dSYM