Creating new release 6.2.0 from stable branch 6.2 (rev 101)

Fixed a bug that cuased the OPENMP version of CSDP to fail on pure li…

…near

programming problems.

Creating 6.1.0 release

Change "CSDP 6.0RC2" to "CSDP 6.0.1" in help message.

Add "free(work);" to end of op_o.c to avoid a small memory leak.

Create releases/6.0.0 from stable/6.0 from trunk revision 14