[boost] Request: sanity check for a jamfile

I just added a new test file for Boost.CRC on the SVN trunk.  I also tried to adapt the test jamfile to accommodate two test programs.  I'm not sure that I did it right, so can anyone check that it works.  (I use XCode to build and test my programs.)  The new file, "crc_test2.cpp", uses the unit-testing apparatus.  The old file, "crc_test.cpp", uses the header-only minimal Testing facility.  (I'm not sure that its link to the Test Execution monitor, in the jamfile, is needed.)  I added a new testing file because I want to add a test case for a bug and Boost.Test has advanced so much that the first file is way too obsolete to be safely extended.  It's change #75959 on the trunk, a.k.a. [https://svn.boost.org/trac/boost/changeset/75959].