217 builds libprog2.so with "4glpc --as-dll" and links prog.4gl against
it, but nothing added that directory to LD_LIBRARY_PATH and the program
carries no rpath, so it died with "cannot open shared object file". That
is what the README.fail has meant since 2004 by "don't know why yet".
Also drops 240 from EXPECT_TO_FAIL_TESTS - the USING fix in r13027 makes
it pass.
