Two PyXspec patches

12.7.0g	Minor fix for when retrieving plot arrays (using tclout plot in standard XSPEC, or Plot.x() and Plot.y() in PyXspec). This removes the trailing zeros that padded the arrays when plot points were removed with the ignore or setplot rebin commands. Our thanks to Alexander Gewering-Peine for pointing this out. Report added on Aug 12, 2011.
12.7.0h	Fix for PyXspec only. Earlier patch 12.7.0f introduced a bug which occurs when a non-norm parameter is modified and set to a parameter link. In this case it does not perform the necessary automatic model recalculation. Our thanks to Adam Mantz for pointing this out. Report added on Aug 25, 2011.