Compatibility with Windows/LEd (Latex Editor)/PSTricks/pdflatex

Modified the usepackage's for compatibility with pdflatex command. Specifically, PSTricks breaks when using pdflatex. Implemented some fixes to try and please both types of users (pdflatex and pslatex(?)).  Please compile on your systems to confirm I didn't break your workflows, as I don't use the latter.  

Errors from LEd:

![error_msg](https://f.cloud.github.com/assets/1906220/300450/85c647fa-9598-11e2-887d-6bdc8fe355cf.jpg)

After adding auto-ps-pdf package:

![error_msg_2](https://f.cloud.github.com/assets/1906220/300451/85cf8c3e-9598-11e2-9912-9663f2881218.png)