Damian's reordering of maux argument.
Change order of function argument calls, rename ilr to imp

Commit changes the order on the transverse solvers so that `ixy` and `imp` are
now in the front of the calling sequence.  Some of the solvers also used `ilr`
rather than `ilr` so these were also converted to `imp`.  For 3D the same was
done except that there was an additional parameter `impt` which was also moved
to the front of the calling sequence.
Fix conversion bugs in geoclaw RPs
Add auxl and auxr dimensioning

This was crashing the ifort with all the warning flags turned on.  Now fixed.
rp1_burgers.f90: missed one index reordering
Added efix=.true. parameter to rp1_burgers.f90
Merge pull request #58 from rjleveque/new-riemann-func-interface-fixes

New riemann func interface fixes