Command checkplatform was created.
All test cases were updated.
Global variable os_type was eliminated.
New option -osx (MacOS) for procedure checkplatform was added.
Usage of QAGetPixelColor were checked and corrected.
Using simple comparison instead of regexp.
Improved usage of command vreadpixel for standard colors.
Command QAGetPixelColor was dropped from TKQADraw.
Procedures "checkcolor" and auxiliary "checkpoint" were moved to DrawResources/TestCommands.tcl
Some test cases using "checkcolor" for picking line color were simplified.
Procedures checkcolor and checkpoint were changed to handle situation when pixel is out of view.
Removed unnecessary use of command "vaspects -setwidth" in tests.
Revert -setwidth change in test bugs/vis/bug23525
Replaced QAMoveTo, QASelect and QAShiftSelect draw commands with vmoveto and vselect
Moved vselect and vmoveto draw commands to ViewerTest_ViewerCommands.cxx
Replaced QAMoveTo and QASelect in test cases. Corrected returned error case result in vselect and vmoveto.
Added commands in ViewerTest_ViewerCommands from QADraw. Edited tests.
QACommands in tests were replaced with ViewerTest commands.
QAxwd command was removed from QADraw. Edited command wzoom and commands from ViewerTest.
Help for ViewerTest commands was edited
Small corrections. Added test cases for polygonal selection.
Small correction of test cases
