(Rose tracing): Added rose tracing prototype. This may not work fully. Just adding so that I dont lose changes.
(Rose tracing): A fully functional rose traceing utility
Merge branch 'master' of rosecompiler1.llnl.gov:rose/edg4x/rose

fixed conflicts

Conflicts:
	config/support-rose.m4
	projects/Makefile.am
	src/ROSETTA/Grammar/Support.code
(Rose tracing) : Added a few toy tests and all Cxx tests. Only 3 tests fail due to a problem in unparser.
Changes 2 tests since their name spaces were polluting the global namespace.
(Valgrind call count) : Added a target to gather call counts using valgrind
(Rose tracing): Fixed issue with SgNullExpressions, fixed tests that were polluting the global namespace.
Merge branch 'master' of rosecompiler1.llnl.gov:rose/edg4x/rose
(Rose Tracing): Made changes to find intersection of traces and mapping the intersection back to SgNodes.
(Rose Tracing): Added tests to exercise path intersection / common prefix.
Merge branch 'master' of rosecompiler1.llnl.gov:rose/edg4x/rose
(Rose tracing): Added a readme.
Merge remote-tracking branch 'origin/master' into HEAD
(LineDeleter): Eliminated bzip2 from testing since LineDeleter is still not robust.
Merge branch 'master' of rosecompiler1.llnl.gov:rose/edg4x/rose
(Rose Tracing): Fixed the failing test2005_120 test that was using hardcoded output for diff comparison.