pacparser 1.3.0 发布，PAC文件解析

pacparser 是一个 PAC 文件解析库，提供了Python和C语言两种版本。

Changes:
This release fixes build related bugs on Mac OS X 10.6, CentOS 5.5 and other systems with Python versions older than 2.5, systems not connected to the Internet. It also fixes a bug in pactester that caused an incorrect exit status if it failed during the execution of FindProxyForURL