shockbubble example moved from amrclaw/tests/shockbubble
Improved shock-bubble computation -- finer grid and better setplot.py
Merge pull request #7 from rjleveque/shockbubble

Shockbubble example added
Merge remote-tracking branch 'clawpack/master' into multi-layer
Update 1d multilayer code to final 5.0 release

Fixes name changes and some final function signature changes.