_decimal.so compile fails in OS X installer builds

[ned-deily]

BPO	14463
Nosy	@ned-deily, @skrah

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/ned-deily'
closed_at = <Date 2012-04-01.09:32:49.641>
created_at = <Date 2012-04-01.09:27:51.924>
labels = ['build']
title = '_decimal.so compile fails in OS X installer builds'
updated_at = <Date 2012-04-01.09:32:49.640>
user = 'https://github.com/ned-deily'

bugs.python.org fields:

activity = <Date 2012-04-01.09:32:49.640>
actor = 'ned.deily'
assignee = 'ned.deily'
closed = True
closed_date = <Date 2012-04-01.09:32:49.641>
closer = 'ned.deily'
components = ['Build']
creation = <Date 2012-04-01.09:27:51.924>
creator = 'ned.deily'
dependencies = []
files = []
hgrepos = []
issue_num = 14463
keywords = []
message_count = 2.0
messages = ['157267', '157268']
nosy_count = 3.0
nosy_names = ['ned.deily', 'skrah', 'python-dev']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue14463'
versions = ['Python 3.3']

[ned-deily]

It may also fail in other builds where the build directory is not the same as the source directory. The problem is in setup.py function _decimal_ext which fails to create an absolute path for the libmpdec include source directory. Patch follows.

[python-dev]

New changeset ac60138522fc by Ned Deily in branch 'default':
Issue bpo-14463: Prevent _decimal.so compile failures in OS X installer builds.
http://hg.python.org/cpython/rev/ac60138522fc