[Boost-build] module_action test broken by Boost.Jam changes.

From: Jurko Gospodnetiæ (jurko.gospodnetic_at_[hidden])
Date: 2007-12-23 09:28:10

   Hi.

   I looked at the module_action test failing on Windows and found out 
the following:
   * Break is caused by Boost Jam not outputting its action results.
   * This is caused by the 'if ( action )' added in out_action() in 
Boost.Jam's output.c source file.
   * Test passes cleanly using the Boost.Jam 3.1.16 release.

   Unfortunately, this is part of some recent Boost.Jam change involving 
functionality that is way to confusing for me and there are no tests for 
it so I can not fix it myself and be sure what I'm doing. :-(

   Comments mention 'quiet' actions and not displaying any output for 
them and for some reason the rules in the module_action test are 
recognized as such 'quiet' actions.

   Hope this helps.

   Best regards,
     Jurko Gospodnetiæ