Fix a memory leak in LFSC proof checker.  Largest QF_UF proof from Morgan (problematic-lfsc-pf) now successfully checks in 58 seconds using ~8 GB memory.  Add example test proof.
Minor documentation fixups.
Fix proof signatures makefile
Minor usability fixes related to SMT-LIB compliance.
Appease compilers from latest XCode release (v5.1).
Move the translator binary from src/main to examples, no longer built by default.
Fix for bug 555; SMT-LIBv2 symbols now output with proper quoting.
Set dumping options from (set-option..) and API more directly.
Refactor the theory specific parts of definition expansion into the theory solvers.

In the process of doing this I may have fixed some bugs or some potential bugs so there
may be some user visible results of this refactoring.

Signed-off-by: Morgan Deters <mdeters@cs.nyu.edu>
Fix documentation for Theory::preRegisterTerm().