1.0.1.31: Speed up fopcompilation of functions

1.0.1.31: Speed up fopcompilation of functions

        * Get rid of the extra wrapper lambda around fopcompiled functions
        * This requires making sure that functions with xeps are never
          let- or assignment-converted.
        * Fix some whitespace damage, and a few tests that were making
          invalid assumptions
        * Compilation speedup seems to be about 5% for most cases, up to
          20% on high debug levels.