fix wrong text of rerun menuselect after user interface warning

the warning, if no user interface for menuselect warning was found is not right. 
you have to rerun configure before make menuselect after installing a proper user interface.

(closes issue #18594)
Reported by: Dovid



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@301444 65c4cc65-6c06-0410-ace0-fbb531ad65f3

Makefile

@@ -887,7 +887,7 @@ menuselect: menuselect/cmenuselect menuselect/nmenuselect menuselect/gmenuselect
 	else \
 		echo "No menuselect user interface found. Install ncurses,"; \
 		echo "newt or GTK libraries to build one and re-rerun"; \
-		echo "'make menuselect'."; \
+		echo "'./configure' and 'make menuselect'."; \
 	fi
 
 cmenuselect: menuselect/cmenuselect menuselect-tree menuselect.makeopts