test for '**' on int types

tests/errors/e_powop.pyx

 def f():
 	cdef char *str1
 	cdef float flt1, flt2, flt3
+	cdef int int1 = 1, int2 = 2, int3
 	flt1 = str1 ** flt3 # error
 	flt1 = flt2 ** str1 # error
+	int3 = int1 ** int2 # disabled in Cython
+	int3 = 3 ** 4       # disabled in Cython
+
 _ERRORS = u"""
-/Local/Projects/D/Pyrex/Source/Tests/Errors2/e_powop.pyx:4:13: Invalid operand types for '**' (char *; float)
-/Local/Projects/D/Pyrex/Source/Tests/Errors2/e_powop.pyx:5:13: Invalid operand types for '**' (float; char *)
+5:13: Invalid operand types for '**' (char *; float)
+6:13: Invalid operand types for '**' (float; char *)
+7:13: C has no integer powering, use python ints or floats instead '**' (int; int)
+8:10: C has no integer powering, use python ints or floats instead '**' (long; long)
 """