New functions publish.m and grabcode.m (patch #9048). * scripts/general/module.mk: Add entries for the new funtions. * scripts/general/grabcode.m: New function. * scripts/general/publish.m: New function. * scripts/general/private/__publish_html_output__.m: New function. * scripts/general/private/__publish_latex_output__.m: New function. * scripts/help/__unimplemented__.m: Remove entries publish and grabcode. * NEWS: Announce new functions. * doc/interpreter/func.txi: Add documentation for the new functions. * test/module.mk: New entry for test module publish. * test/publish/module.mk: New entries for publish tests. * test/publish/publish.tst: New test file, to run all test scripts on publish and grabcode. * test/publish/test_script.m: New test script. * test/publish/test_script_code_only.m: New test script. * test/publish/test_script_empty.m: New test script. * test/publish/test_script_example.m: New test script. * test/publish/test_script_head_only.m: New test script.

%% Headline title
%
% Some *bold*, _italic_, or |monospaced| Text with
% a <http://www.octave.org link to GNU Octave>.
%%

# "Real" Octave commands to be evaluated
sombrero ()

## Octave comment style supported as well
#
# * Bulleted list item 1
# * Bulleted list item 2
#
# # Numbered list item 1
# # Numbered list item 2