update default branch to release as 4.0 Now that we plan to release default instead of the gui-release branch as 4.0, restore functions removed from the default branch. * java_new.m, default_save_options.m, gen_doc_cache.m, interp1q.m, isequalwithequalnans.m, java_convert_matrix.m, java_debug.m, java_invoke.m, java_unsigned_conversion.m, javafields.m, javamethods.m, re_read_readline_init_file.m, read_readline_init_file.m, saving_history.m: Restore deprecated functions. * scripts/deprecated/module.mk: Update. * NEWS: Update. * configure.ac (AC_INIT): Set version to 3.9.0+. (OCTAVE_MAJOR_VERSION): Now 3. (OCTAVE_MINOR_VERSION): Now 9.

--- a/scripts/deprecated/syl.m
+++ b/scripts/deprecated/syl.m
@@ -19,7 +19,7 @@
 ## -*- texinfo -*-
 ## @deftypefn {Built-in Function} {@var{x} =} syl (@var{A}, @var{B}, @var{C})
 ##
-## @code{syl} is deprecated and will be removed in Octave version 4.6.
+## @code{syl} is deprecated and will be removed in Octave version 4.4.
 ## Use @code{sylvester} for the equivalent functionality.
 ##
 ## Solve the Sylvester equation
@@ -45,7 +45,7 @@
 ## @end example
 ## @end deftypefn
 
-## Deprecated in version 4.2
+## Deprecated in version 4.0
 
 function x = syl (A, B, C)