refactor quotes test for new test suite layout
correct use of objext to OBJEXT
Refactor rescan_nr test for new test suite layout.

Also add -r option to testwrapper.sh to support passing input file as
a command line argument to the test scanner without using shell
redirection.
refactor rescan_r test for new test suite layout
refactor include_by_* tests for new test suite layout
refactor concatenated options test for new test suite layout