Keep executing a channel script until callTo, callJust or hangup.
A different non-blocking function does not exit the script.
Fixes bug #336.


git-svn-id: http://yate.null.ro/svn/yate/trunk@5790 acf43c95-373e-0410-b603-e72c3f656dc1
Added an optional 2nd argument to callTo() and callJust() to set parameters.
Made callTo() and callJust() to be callable from pretty much anywhere.
Solves bug #338.


git-svn-id: http://yate.null.ro/svn/yate/trunk@5791 acf43c95-373e-0410-b603-e72c3f656dc1