Incorporate new functions ichol and ilu into Octave. * NEWS: Announce new functions. * aspell-octave.en.pws: Add new functions names to custom Octave dictionary. * sparse.txi: Add functions to Octave manual. * __unimplemented__.m: Remove functions from unimplemented list. * lu.cc (Flu), luinc.cc (Fluinc), chol.cc (Fchol): Add seealso links in docstrings. * __ichol__.cc: Wrap long lines to less than 80 chars. Remove trailing whitespace. Don't repeat input validation done in ichol.m for internal functions. Avoid resizing retval vector. * __ilu__.cc: Wrap long lines to less than 80 chars. Remove trailing whitespace. Don't repeat input validation done in ichol.m for internal functions. Avoid resizing retval vector. * ichol.m: Rewrite docstring. Use Octave coding conventions (double quotes hash for comments, ! instead of ~). Replace %!error tests not being run with fail(). * ilu.m: Rewrite docstring. Use Octave coding conventions (double quotes hash for comments, ! instead of ~). Replace %!error tests not being run with fail().

--- a/libinterp/corefcn/lu.cc	Mon Aug 18 12:32:16 2014 +0100
+++ b/libinterp/corefcn/lu.cc	Tue Aug 26 15:27:21 2014 -0700
@@ -137,7 +137,7 @@
 is embedded into @var{U} to give a return value similar to the full case.\n\
 For both full and sparse matrices, @code{lu} loses the permutation\n\
 information.\n\
-@seealso{luupdate, chol, hess, qr, qz, schur, svd}\n\
+@seealso{luupdate, ilu, chol, hess, qr, qz, schur, svd}\n\
 @end deftypefn")
 {
   octave_value_list retval;