Support for arbitrary sized vectors - (was limited by 2-4 previously)

patch http://codereview.appspot.com/5482043
from Andrew Hale

* Text from the submission *

This patch adds the ability to use arbitrary sized vectors from mathutils.
Currently vectors are only of size 2, 3 or 4 since they are generally restricted
to geometric applications. However, we can use arbitrary sized vectors for
efficient calculations and data manipulation.

source/blender/python/mathutils/mathutils.h

@@ -115,6 +115,7 @@ int _BaseMathObject_WriteIndexCallback(BaseMathObject *self, int index);
 
 /* utility func */
 int mathutils_array_parse(float *array, int array_min, int array_max, PyObject *value, const char *error_prefix);
+int mathutils_array_parse_alloc(float **array, int array_min, PyObject *value, const char *error_prefix);
 int mathutils_any_to_rotmat(float rmat[3][3], PyObject *value, const char *error_prefix);
 
 int column_vector_multiplication(float rvec[4], VectorObject *vec, MatrixObject *mat);