ENH: Adding search path's for PYTHON_LIBRARY

Modules/FindPythonLibs.cmake

@@ -20,7 +20,7 @@ IF(WIN32)
 ENDIF(WIN32)
 
 FIND_LIBRARY(PYTHON_LIBRARY 
-  NAMES python python21 python2.1 python20 python2.0
+  NAMES python python21 python2.1 python20 python2.0 python1.5 python15
   PATHS
   /usr/lib
   /usr/lib/python1.5/config