ENH: Fix node number ordering when reading in quadratic hex and quadratic wedge meshes from exodus.  Fix some memory leaks caused by improper syntax.
ENH: Fix node number ordering when reading in quadratic hex and quadratic wedge meshes from exodus.  Fix some memory leaks caused by improper syntax.

cjh1/Xdmf2,cjh1/Xdmf2,cjh1/Xdmf2