moar testing - trying to win last step

with RUNTIME_LINKER_PATH, I think the problem is that it is not being
propagated down to csc from chicken-install.

The output file, rev-app, doesn't list my installlib dir in its runtime
path; I can see this with:

dump -n -X64 rev-app/rev-app | head -18

I should test and see if other programs created with csc have the right
value here, or whether I can insert it myself with gcc
simplify runtests.sh; add -x tracing
Merge branch 'makecheck' of /home/efalor/build/chicken/chicken-core into makecheck

* 'makecheck' of /home/efalor/build/chicken/chicken-core:
  more testing - final test is still failing

Conflicts:
	tests/runtests.sh