Thu Jun  6 17:02:06 UTC 2013  Phil Mesnier  <mesnier_p@ociweb.com>

        * include/makeinclude/rules.lib.GNU:

          The rule for generating versioned_so=2 style libraries would create
          names such as "-6.2.0.so" in cases where the SHLIB was reset to empty,
          for instance if a precondition isn't met. As an example, ACE_TkReactor
          should skip the build if macro tk=1 isn't set. but with versioned_so=2
          the VSHLIB target was non-empty so the build was attempted. Now the
          VSHLIB and related targets are modified only if the source libname
          is not empty.

git-svn-id: svn://svn.dre.vanderbilt.edu/DOC/Middleware/trunk/ACE@97194 ae88bc3d-4319-0410-8dbf-d08b4c9d3795