Support // division conversion

[596050]

When trying to convert this python code:

def binary_search_recursive(array, element, start, end):
    if start > end:
        return -1

    mid = (start + end) // 2
    if element == array[mid]:
        return mid

    if element < array[mid]:
        return binary_search_recursive(array, element, start, mid-1)
    else:
        return binary_search_recursive(array, element, mid+1, end)

An error is thrown, which seems to mean the // operator in python is not supported:
"An error occurred while compiling source file '/tmp/source/source.py'\r\n" "TransformationError: Node type 'FloorDiv': Line: n. a., column: n. a.. No transformation for the node\r\n"

Would it be possible to support this?
in metapensiero.pj/src/metapensiero/pj/transformations/special.py

# <code>2//3</code> &rarr; <code>Math.floor(2/3)</code>
def BinOp_floor(t, x):
    if isinstance(x.op, ast.FloorDiv):
        return JSCall(
            JSAttribute(
                JSName('Math'),
                'floor'),
                JSBinOp(x.left, JSOpDiv(), x.right)
            )
BinOp = [BinOp_floor, BinOp_pow, BinOp_default]

[azazel75]

If you are so kind to submit this together with a small test there's no problem, thanks! Otherwise i'll add it next time I've some time to dedicate to this project. Thanks!