Add libg2c_bin package at version 0.0.0

This adds libg2c bin libs packaged from quango (32bit) and unagi
(64bit) CentOS5 systems.  This is for CentOS5 PGPLOT compatibility.
Merge pull request #32 from sot/add_libg2c_bin

Add libg2c_bin package at version 0.0.0