ov-base-int.cc, ov-float.cc: Fix build without HDF5 * ov-base-int.cc Without this, gcc 4.7 shows: "error: 'gripe_save' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation [-fpermissive] note: declarations in dependent base 'octave_base_value' are not found by unqualified lookup. Use 'this->gripe_save' instead" * ov-float.cc: Move retval outside ifdef HAVE_HDF5 block

7f19e7f2afa2b1476983003f9cd6df2f5b2a4b08 gnulib-hg