patch 8.0.1822: make uninstall does not remove colors/tools

Problem:    Make uninstall does not remove colors/tools.
Solution:   Add a line to delete the tools directory. (Kazunobu Kuriyama)

src/Makefile

@@ -2824,6 +2824,7 @@ uninstall_runtime:
	-rm -f $(SYS_FTPLUGOF_FILE) $(SYS_FTPLUGIN_FILE)
	-rm -f $(SYS_OPTWIN_FILE)
	-rm -f $(DEST_COL)/*.vim $(DEST_COL)/README.txt
	-rm -rf $(DEST_COL)/tools
	-rm -f $(DEST_SYN)/*.vim $(DEST_SYN)/README.txt
	-rm -f $(DEST_IND)/*.vim $(DEST_IND)/README.txt
	-rm -rf $(DEST_MACRO)

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =

static int included_patches[] =
{   /* Add new patch number below this line */
/**/
    1822,
/**/
    1821,
/**/