The generated .t file now kills the test program if it hasn't
completed within a defined interval, 5 minutes by default.
Separate implementations for Windows and Unix hosts.
If a test program reports test failures, the Perl wrapper
must return the same error status. On Windows where we use
system() instead of exec() that needs some value fiddling.
In some cases the license-identification header was missing,
so I added that as well. Replaced the remaining headers that
specifically identified "Versions 3.13.7 and higher".
Makefiles and the build system were deliberately excluded.
If the test starts an IOC, the registerRecordDeviceDriver
routine will compare the absolute path of TOP at build time
against the environment variable value (normally relative)
and print a warning if they differ.
This change cleans up the .tap output from such tests.
