[FIX] UFEM: Propagate LSS strategy change
[FIX] UFEM broken tests, LSSAction strategy
[ENH] UFEM: Use symmetric velocity matrix
[ENH] UFEM: Add optional skipping of velocity assembly
[ENH] UFEM: allow user adjustment of SUPG stabilization
[DEV] UFEM: test alternative bulk viscosity
[DEV] UFEM: More SUPG coefficient adjustment
[DEV] UFEM: Try minimal edge length for stabilization
[ENH] UFEM: Incorporate improved PSPG
[ENH] Add PrintTimingTree action
[ENH] UFEM: Add config options for SUPG
[FIX] UFEM: Wrong default for c2
[ENH] Trilinos DirectStrategy can be reset periodically
[FIX] Compile errors
Merge pull request #259 from wdeconinck/master

Compilation with libc++, as is default in Mac OSX Mavericks
[ENH] UFEM: Remove reference velocity
[FIX] Broken tests
[FIX] UI test
[MERGE] libc++ and UFEM fixes
[FIX] Broken tests, revert regist_signal_handlers default