test installable config

[rurban]

Current tests do not test the installables, esp. if the prefix is correctly set from the build_dir to the configured prefix, i.e. if config.fpmc is linked, in contrary to the build-time config_lib.pasm

In the patch is t/tools/parrot_config.t which checks parrot_config prefix against installable_parrot_config prefix.

In reality I also test two languages, installable_abc and installable_perl6 with strace for invalid path accesses, but this probably not possible within this simple framework for now.

[allison]

This was a bare bones proof-of-concept test file. Resubmit when fully developed.

[jkeenan]

There has been no resubmission to this ticket in two years. And no one has spoken up as to the need for this sort of test. Closing.