Don't test + in target names on Borland.

It fails with such target names as it strips the '+':

 Fatal: Unable to open file 'WRAPC.LIB'

 http://open.cdash.org/testDetails.php?test=179971699&build=2837755
Merge topic 'fix-transitive-target-names' into next

531067f Don't test + in target names on Borland.