Add additional FindPythonLibs patch from upstream (bug #1072964)

cmake-FindPythonLibs2.patch

@@ -0,0 +1,31 @@
+From bf28ff1f422407f10ecc283f03ce8c5ee57f1812 Mon Sep 17 00:00:00 2001
+From: Brad King <brad.king@kitware.com>
+Date: Wed, 5 Mar 2014 11:57:00 -0500
+Subject: [PATCH] FindPythonLibs: Do not try to find the interpreter (#13794)
+
+The parent commit taught FindPythonLibs to try to find PythonInterp
+unconditionally.  Some projects may want the libraries of a specific
+version even when the corresponding interpreter is not available.  Drop
+the internal use of FindPythonInterp and just use the versions from it
+if it happens to have been found by the project first.  That will allow
+projects to get a consistent version when they want both but not
+otherwise force them to find the interpreter.
+---
+ Modules/FindPythonLibs.cmake |    1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/Modules/FindPythonLibs.cmake b/Modules/FindPythonLibs.cmake
+index 27d9e45..656ed7b 100644
+--- a/Modules/FindPythonLibs.cmake
++++ b/Modules/FindPythonLibs.cmake
+@@ -83,7 +83,6 @@ endif()
+ # If FindPythonInterp has already found the major and minor version,
+ # insert that version between the user supplied versions and the stock
+ # version list.
+-find_package(PythonInterp QUIET)
+ set(_Python_VERSIONS ${Python_ADDITIONAL_VERSIONS})
+ if(DEFINED PYTHON_VERSION_MAJOR AND DEFINED PYTHON_VERSION_MINOR)
+   list(APPEND _Python_VERSIONS ${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR})
+-- 
+1.7.10.4
+