Fix issues to update cppcheck support to 1.72

Fix issues to update cppcheck support to 1.72

Bumped requirement for cppcheck in releng.

Changed the output template to make it easier to find cppcheck's
name for the error when a suppression needs to be added.

Bugs found in gmx_lapack (checked by comparing with Fortran version).

Simplified some checkpoint-reading code, since reading always does the
allocation.

Removed some unused OpenCL debug code.

Removed some suppressions no longer needed.

Change-Id: I882ea877bd489ca253b5a7f06becb7e43bb6a3d0