New formula: Postgres-XC 1.0.1.

Postgres-XC is an open source project to provide a write-scalable, synchronous multi-master, transparent PostgreSQL cluster solution (see http://postgres-xc.sourceforge.net/).

Tested in the following environment:

HOMEBREW_VERSION: 0.9.3
HEAD: 9e8f3e97844dea189f01ce2185430c831efc8583
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
CPU: quad-core 64-bit sandybridge
OS X: 10.8.2-x86_64
Xcode: 4.5.2
CLT: 4.5.0.0.1.1249367152
LLVM-GCC: build 2336
Clang: 4.1 build 421
X11: 2.7.4 => /opt/X11
System Ruby: 1.8.7-358
Perl: /usr/bin/perl
Python: /usr/bin/python
Ruby: /Users/lifepillar/.rbenv/shims/ruby