refined license declaration in python-empy (issue #1)

recipes-devtools/python/python-empy_3.3.bb

 DESCRIPTION = "A powerful and robust templating system for Python"
 SECTION = "devel/python"
-LICENSE = "LGPL"
+LICENSE = "LGPL-2.1"
 LIC_FILES_CHKSUM = "file://COPYING;md5=7fbc338309ac38fefcd64b04bb903e34"
 SRCNAME = "empy"
 
@@ -12,4 +12,4 @@ S = "${WORKDIR}/${SRCNAME}-${PV}"
 
 RDEPENDS = "python-modules"
 
-inherit distutils
\ No newline at end of file
+inherit distutils