Move core/scripts to build/scripts so that platform can use them.

Source/core/scripts/hasher.py

-#!/usr/bin/python
-# Copyright (C) 2013 Google, Inc.
-#
-# This library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Library General Public
-# License as published by the Free Software Foundation; either
-# version 2 of the License, or (at your option) any later version.
-#
-# This library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# Library General Public License for more details.
-#
-# You should have received a copy of the GNU Library General Public License
-# along with this library; see the file COPYING.LIB.  If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-# Boston, MA 02110-1301, USA.
-
-# This implementaiton of SuperFastHash is based on the Python implementation
-# by Victor Perron at <https://github.com/vperron/python-superfasthash>.
-# We've modified Victor's version to output hash values that match WTFString,
-# which involves using a specific seed and some different constants.
-
-class uint32_t(long):
-    def __rshift__(self, other):
-        return uint32_t(long.__rshift__(self, other) & ((1L << 32) - 1))
-
-    def __lshift__(self, other):
-        return uint32_t(long.__lshift__(self, other) & ((1L << 32) - 1))
-
-    def __add__(self, other):
-        return uint32_t(long.__add__(self, other) & ((1L << 32) - 1))
-
-    def __xor__(self, other):
-        return uint32_t(long.__xor__(self, other) & ((1L << 32) - 1))
-
-
-def hash(string):
-    """
-    Stream-adapted SuperFastHash algorithm from Paul Hsieh,
-    http://www.azillionmonkeys.com/qed/hash.html
-    LGPLv2.1
-    Python version with no dependencies.
-    Victor Perron <victor@iso3103.net>
-    """
-
-    if not string:
-        return 0
-
-    result = uint32_t(0x9E3779B9L)
-    length = len(string)
-    remainder = length & 1
-    length >>= 1
-
-    i = 0
-    while length > 0:
-        length -= 1
-        result += ord(string[i])
-        temp = (ord(string[i + 1]) << 11) ^ result
-        result = (result << 16) ^ temp
-        i += 2
-        result += (result >> 11)
-
-    if remainder == 1:
-        result += ord(string[i])
-        result ^= (result << 11)
-        result += (result >> 17)
-
-    # Force "avalanching" of final 127 bits
-    result ^= (result << 3)
-    result += (result >> 5)
-    result ^= (result << 2)
-    result += (result >> 15)
-    result ^= (result << 10)
-
-    # Save 8 bits for StringImpl to use as flags.
-    result &= 0xffffff
-
-    # This avoids ever returning a hash code of 0, since that is used to
-    # signal "hash not computed yet".
-    assert result != 0
-
-    return result