Problem: Memory leak in Perl. Solution: Decrement the reference count. Add a test. (Damien)
Problem: The Perl interface cannot use 'print' operator for writing directly in standard IO. Solution: Add a minimal implementation of PerlIO Layer feature and try to use it for STDOUT/STDERR. (Damien)
Problem: Both old and new style tests for Perl. Solution: Merge the old tests with the new style tests.
Problem: There is no perleval(). Solution: Add perleval(). (Damien)
