Preliminary inclusion of uixx objects properties in the manual (bug #46076) * doc/interpreter/genpropdoc.m: add uixx objects to the list of supported graphics objects * doc/interpreter/genpropdoc.m (get_doc): add uixx objects and their specific properties (currently empty documentation) * doc/interpreter/plot.txi("Interacting with Plots"): add a note and a reference about ui* family of functions. * doc/interpreter/plot.txi("Interacting with Plots"): for consistency, remove "uimenu" reference. All the other uixx are already in the gui section * doc/interpreter/plot.txi("graphics data structure"): add uixx objects * doc/interpreter/gui.txi("UI Elements"): add "uimenu" function reference * doc/module.mk: add rules to build uixx properties texi files. * graphics.in.h: make uixx "__object__" property (Octave internal) hidden so that it does not appear in the documentation.

nest_fcn_files = \
  test/nest/arg_nest.m \
  test/nest/arg_ret.m \
  test/nest/nest_eval.m \
  test/nest/no_closure.m \
  test/nest/persistent_nest.m \
  test/nest/recursive_nest.m \
  test/nest/recursive_nest2.m \
  test/nest/recursive_nest3.m \
  test/nest/scope0.m \
  test/nest/scope1.m \
  test/nest/scope2.m \
  test/nest/scope3.m \
  test/nest/script_nest.m \
  test/nest/script_nest_script.m \
  test/nest/nest.tst \
  test/nest/varg_nest.m \
  test/nest/varg_nest2.m

TEST_FILES += $(nest_TEST_FILES)