use Pmodules extended commands in modulefiles (fixing issue #3)

System/nmap/modulefile

@@ -1,11 +1,11 @@
 #%Module1.0
 
-set whatis	"utility for network discovery and security auditing."
-set url		"http://nmap.org/"
-set license	"GNU GPL v2"
-set maintainer	"Achim Gsell <achim.gsell@psi.ch>"
+module-whatis		"utility for network discovery and security auditing."
+module-url		"http://nmap.org/"
+module-license		"GNU GPL v2"
+module-maintainer	"Achim Gsell <achim.gsell@psi.ch>"
 
-set help	"
+module-help		"
 Nmap (\"Network Mapper\") is a free and open source (license) utility for
 network discovery and security auditing. Many systems and network
 administrators also find it useful for tasks such as network inventory,
@@ -24,4 +24,3 @@ scan results (Ndiff), and a packet generation and response analysis tool
 (Nping). 
 "
 
-source		$env(PSI_LIBMODULES)