[svn-r3456] Getting rid of SVN IDs that are present in 5% of the files and not in the other 95%. This is creating unnecessary conflicts for collaborators who merge from MPICH2.

[svn-r3349] Added the ability to check for handles allocated but not freed; also a number of fixes to plug leaks in handles that this capability exposed

significant additional functionality.  This change contains the infrastructure
for SMP collectives and an implementation of SMP-aware broadcast.

Reviewed by thakur@.

[svn-r3184] Added definitions for THREAD_CS_ENTER/EXIT in the non-threaded mode and added a few FIXMEs and minor text changes (in some cases to conform to the coding standards)

[svn-r3177] Switch to the new macro for the global thread critical section (most of this is an automated change, tested against the MPICH2 test suite)