updated for version 7.4.449
Problem:    Can't easily close the help window. (Chris Gaal)
Solution:   Add ":helpclose". (Christian Brabandt)
diff --git a/src/ex_cmds.h b/src/ex_cmds.h
index 41d3a64..f3007c9 100644
--- a/src/ex_cmds.h
+++ b/src/ex_cmds.h
@@ -417,6 +417,8 @@
 			BANG|FILES|EDITCMD|ARGOPT|TRLBAR|CMDWIN),
 EX(CMD_help,		"help",		ex_help,
 			BANG|EXTRA|NOTRLCOM),
+EX(CMD_helpclose,	"helpclose",	ex_helpclose,
+			RANGE|NOTADR|COUNT|TRLBAR),
 EX(CMD_helpfind,	"helpfind",	ex_helpfind,
 			EXTRA|NOTRLCOM),
 EX(CMD_helpgrep,	"helpgrep",	ex_helpgrep,