0024351: Test cases for AIS dimension presentations to check arrow orientation, text...

0024351: Test cases for AIS dimension presentations to check arrow orientation, text position

- Added test cases to check label and arrows positioning of AIS length, angle, radius, diameter dimensions;
- Added new arguments to "vdim" command to modify "flyout", "arrow orientation", "label position" properties;
- Corrected bug: duplication of text label of linear dimensions for the horizontal-centered text.
- Rename and revise argument interface of "vdimension" (vdim) command.
- Correct test cases for new command name and arguments style.

corrected test cases - check with testdiff instead of "checkcolor"