Support for vertical AxisY title.

Visifire Version           : <Copy from: 'about:version'>
Silverilght / WPF          :
Managed Code / JavaSctipt  :
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Implementation of vertical text for AxisY title as reported in the forum post 
below.
http://www.visifire.com/forums/index.php?showtopic=2376&pid=10874&st=0&#entry108
74

Original issue reported on code.google.com by shoaibi...@gmail.com on 9 Dec 2010 at 11:36

zhangzy0193 / visifire

Support for vertical AxisY title. #303