Removed leaks found by valgrind

git-svn-id: http://casacore.googlecode.com/svn/branches/nrao-nov12@21406 6afa274c-0927-0410-9b47-a1284d797885
Added valgrind suppression for libc error

git-svn-id: http://casacore.googlecode.com/svn/branches/nrao-nov12@21407 6afa274c-0927-0410-9b47-a1284d797885
Needed to include of limits


git-svn-id: http://casacore.googlecode.com/svn/branches/nrao-nov12@21408 6afa274c-0927-0410-9b47-a1284d797885
Fixed test tPoolStack

git-svn-id: http://casacore.googlecode.com/svn/branches/nrao-nov12@21409 6afa274c-0927-0410-9b47-a1284d797885
Make sure all casa tests pass valgrind; added some .run files to exclude long-running tests from valgrind

git-svn-id: http://casacore.googlecode.com/svn/branches/nrao-nov12@21410 6afa274c-0927-0410-9b47-a1284d797885