Added info to DebyeHuckel. It's getting to be near a documented state.
test suite fix:
fixed Makefile.in's. The .depends were not being included in the Makefiles.
It should now be more stable.
Fixed an error in IdealMolalSoln -> density wasn't beeing recalculated.
Updated the test problem with the fix.
Worked CANTERA_DEBUG_MODE into the Makefiles. It wasn't being used.
Split the multiproblem DH_graph_1 test into multiple directories, one per test
Worked on getting all of the test problems to have the same look, feel, and printout.
