Update to rra-c-util 5.8 and C TAP Harness 3.3

Update to rra-c-util 5.8 and C TAP Harness 3.3

Update to rra-c-util 5.8:

* Support the Solaris 10 embedded Kerberos implementation.
* Use calloc or reallocarray instead of malloc.
* Fix compilation with a C++ compiler.

Update to C TAP Harness 3.3:

* Display verbose test results with -v or C_TAP_VERBOSE.
* Reopen standard input to /dev/null when running a test list.
* Don't leak extraneous file descriptors to tests.