Use epsilon in modal solver test
Use epsilon in modal solver test

Default epsilon for isApprox was too small,
leading to some false test failures.

petertsoi/libmv,SoylentGraham/libmv,rgkoo/libmv-blender,rgkoo/libmv-blender,rgkoo/libmv-blender,rgkoo/libmv-blender,SoylentGraham/libmv,SoylentGraham/libmv,petertsoi/libmv,SoylentGraham/libmv,petertsoi/libmv,petertsoi/libmv,rgkoo/libmv-blender