Revert new symlink script

This reverts commit 2965fb550ffd59f08bb509ab4f409584fb7d6c13.

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>

Conflicts:
	ChangeLog
Use bigger stack section in nSIM baseboard

Claudiu suggested to use a bigger stack section in nSIM baseboard, because
some tests might not pass because of a small stack.

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
(cherry picked from commit 488993c97993b0276c073928aaa87bbe51a0aae8)

Conflicts:
	ChangeLog
Better error message in DejaGNU test script

When unknown argument was passed to script that runs DejaGNU regression
tests it was printing "Usage" information, however it was completely unclear
what happens and which argument is invalid. This commit fixes both things:

1) Appropriate error message is printed, so that user will be aware what is
wrong
2) Error message will contain invalid argument so there will be no need to
manually search for invalid argument.

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
(cherry picked from commit 43438b84edc3ef232be23cd7802782c5ca0cdd0f)
Switch to nsimdrv instead of nsim_gdb

Nsim_gdb is an obsolete application, nsimdrv is a new alternative.

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
(cherry picked from commit 5484615ca6c1b009b5d2ba65a505118e204fdb32)