Merge commit '60a21b3d'

* commit '60a21b3d':
  configure: Check for _M_ARMT to detect thumb when using MSVC

Conflicts:
	configure
Merged-by: Michael Niedermayer <michael@niedermayer.cc>

configure

@@ -4758,6 +4758,8 @@ elif enabled alpha; then
 
 elif enabled arm; then
 
+    enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
+
     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
 float func(float a, float b){ return a+b; }
 EOF