Add make nodepends to INSTALL, thanks nonanet from irc.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@2508 d0543943-73ff-0310-b7d9-9358b9ac24b2

INSTALL

@@ -22,6 +22,8 @@ UNIX:
 	*) Rebuild all the dependancies
 	   make megaclean 
 
+  *) Build freeswitch without automatically installing the support libraries (you will need to manually build them all):
+     make nodepends
 
 Windows 32: