8u20 review request: RT-34854 - wrong stroke widths on texture-based primitives

[Jim Graham]

It's a simple fix.  I'm including Lisa on the reviewers because I'm 
surprised that this never showed up on embedded where the texture-based 
primitives are used by default...?

Jira: https://javafx-jira.kenai.com/browse/RT-34854
webrev: http://cr.openjdk.java.net/~flar/RT-34854/webrev.00/
Tested with the test cases included in the bug report with the 
appropriate flags (flags not needed on mobile)...

                        ...jim