Add spellchecker scripts for Octave and run spellcheck of documentation interpreter/doccheck: New directory for spelling/grammar scripts. interpreter/doccheck/README: Instructions for using scripts. interpreter/doccheck/spellcheck: Script to spellcheck a Texinfo file. interpreter/doccheck/aspell.conf: GNU Aspell configuration file for Octave documentation. interpreter/doccheck/aspell-octave.en.pws: Private Aspell dictionary. interpreter/doccheck/add_to_aspell_dict: Script to add new Octave-specific words to private Aspell dictionary. interpreter/octave.texi: New @nospell macro which forces Aspell to ignore the word marked by the macro. interpreter/mk_doc_cache.m: Skip new @nospell macro when building doc_cache.

--- a/scripts/sparse/pcr.m	Thu Jul 15 12:15:14 2010 +0200
+++ b/scripts/sparse/pcr.m	Sat Jul 17 19:53:01 2010 -0700
@@ -158,10 +158,10 @@
 ## @end group
 ## @end example
 ## 
-## @sc{References}
+## References:
 ## 
-##      [1] W. Hackbusch, "Iterative Solution of Large Sparse Systems of
-##      Equations", section 9.5.4; Springer, 1994
+##      [1] W. Hackbusch, @cite{Iterative Solution of Large Sparse Systems of
+##      Equations}, section 9.5.4; Springer, 1994
 ##
 ## @seealso{sparse, pcg}
 ## @end deftypefn