maint: Replace some uses of goto in libinterp. * ls-mat4.cc (read_mat_file_header): Replace "goto data_read_error" with "return -1". * ls-mat4.cc (read_mat_binary_data): Replace "goto data_read_error" with direct call to error. Move variable declarations to point of usage. * ls-mat5.cc (read_mat5_tag, write_mat5_tag): Replace "goto data_read_error" with "return 1". * ls-mat5.cc (save_mat5_binary_element): Replace "goto skip_to_next" with "return true". * ls-oct-binary.cc (read_binary_data): Replace "goto data_read_error" with direct call to error. * mex.cc (valid_key): Replace "goto done" with "return retval". * rand.cc (do_rand): Clarify comment. * pt-binop.cc (tree_binary_expression::rvalue1): Replace "goto done" with "return octave_value (xxx)" * pt-binop.cc (tree_boolean_expression::rvalue1): Replace "goto done" with "return octave_value (xxx)"

if AMCOND_BUILD_GUI

if AMCOND_ENABLE_DYNAMIC_LINKING
  LIBOCTGUI_LINK_DEPS =
else
  LIBOCTGUI_LINK_DEPS = $(DLDFCN_LIBS)
endif

LIBOCTGUI_LINK_DEPS += \
  $(QT_LIBS) \
  $(OPENGL_LIBS)

LIBOCTGUI_LINK_OPTS = \
  $(QT_LDFLAGS)

if AMCOND_LINK_ALL_DEPS
  LIBOCTGUI_LINK_DEPS += $(LIBOCTINTERP_LINK_DEPS)
  LIBOCTGUI_LINK_OPTS += $(LIBOCTINTERP_LINK_OPTS)

  OCTAVE_GUI_LINK_DEPS = $(LIBOCTGUI_LINK_DEPS)
  OCTAVE_GUI_LINK_OPTS = $(LIBOCTGUI_LINK_OPTS)
endif

endif