Log STDERR from cw_tpl_erb()
Diagnostics for EXEC.* exit codes
v2.0.5
Change ruby shebang
Fix memory errors in bdfa unpack routines
Pendulum Heap support

The pn_machine VM now has a "heap" for tracking dynamically allocated
blocks of memory, and properly garbage-collecting them when there are no
references to them in the %A-%F, %S1, %S2, %T1 or %T2 registers.

This should allow us to safely compare the output of multiple EXEC.RUN1
calls, for use in package version comparisons, without leaking memory.
Fix serial management

We were mangling res_* pointers, by casting them to struct resource*
poitners (which is completely wrong).  Now, we pass the resource serial
to the gencode callback, directly.

This should clear up *several* memory errors found by valgrind.
Fix file descriptor leaks in cogd/clockd