Calculate the path to Graphviz's plugins based on the location of dot, and pass this in the GVBINDIR environment variable.
Set the full path on dynamic libraries when installing on Mac OS X.
Define NDEBUG for Release builds.
Merge updated upstream.
Update OS X application bundle information.
Merge branch 'master' into development
Make DYLD_LIBRARY_PATH used for dot depend on the location of dot.