patch 8.1.1637: after running tests and clean the XfakeHOME directory remains

Problem:    After running tests and clean the XfakeHOME directory remains.
Solution:   Use "rm -rf". (Hirohito Higashi)

src/testdir/Make_amiga.mak

@@ -26,7 +26,7 @@ nongui:	/tmp $(SCRIPTS_FIRST) $(SCRIPTS)
 	csh -c echo ALL DONE
 
 clean:
-	csh -c \rm -rf *.out /tmp/* Xdotest small.vim tiny.vim mbyte.vim test.ok viminfo
+	csh -c \rm -rf *.out Xdir1 Xfind XfakeHOME Xdotest small.vim tiny.vim mbyte.vim test.ok viminfo
 
 .in.out:
 	copy $*.ok test.ok

src/testdir/Makefile

@@ -84,7 +84,7 @@ RM_ON_START = tiny.vim small.vim mbyte.vim mzscheme.vim test.ok benchmark.out
 RUN_VIM = VIMRUNTIME=$(SCRIPTSOURCE); export VIMRUNTIME; $(VALGRIND) $(VIMPROG) -f $(GUI_FLAG) -u unix.vim $(NO_INITS) -s dotest.in
 
 clean:
-	-rm -rf *.out *.failed *.res *.rej *.orig
+	-rm -rf *.out *.failed *.res *.rej *.orig XfakeHOME Xdir1 Xfind
 	-rm -f opt_test.vim test.log test_result.log messages
 	-rm -f $(RM_ON_RUN) $(RM_ON_START)
 	-rm -f valgrind.*

src/version.c

@@ -777,6 +777,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1637,
 /**/
     1636,
 /**/