Re-write documentation and all examples of dynamically linked functions. * doc/interpreter/dynamic.txi: deleted. * doc/interpreter/external.txi: Renamed from dynamic.txi. Rewrote or added much information about dynamically linked functions. * doc/interpreter/Makefile.am: Changed dynamic.txi to external.txi in build system. * doc/interpreter/data.txi, doc/interpreter/intro.txi, doc/interpreter/octave.texi, doc/interpreter/sparse.txi: Changed dynamic.txi to external.txi in cross-references. * doc/interpreter/doccheck/aspell-octave.en.pws: Added new words from external.txi to Octave dictionary. * examples/firstmexdemo.c: deleted. * examples/mex_demo.c: Renamed from firstmexdemo.c. Added many more comments to code. * examples/hello.cc: deleted. * examples/oct_demo.cc: Renamed from hello.cc. Added many more comments to code. * examples/Makefile.am: Changed build system to use mex_demo.c and oct_demo.cc. * examples/addtwomatrices.cc, examples/celldemo.cc, examples/embedded.cc, examples/fortdemo.cc, examples/funcdemo.cc, examples/globaldemo.cc, examples/helloworld.cc, examples/mycell.c, examples/myfeval.c, examples/myfunc.c, examples/myhello.c, examples/mypow2.c, examples/myprop.c, examples/myset.c, examples/mysparse.c, examples/mystring.c, examples/mystruct.c, examples/paramdemo.cc, examples/standalone.cc, examples/stringdemo.cc, examples/structdemo.cc, examples/unwinddemo.cc: Use Octave coding conventions for code. Fixed all compilation errors and warnings.

--- a/examples/paramdemo.cc
+++ b/examples/paramdemo.cc
@@ -1,15 +1,14 @@
 #include <octave/oct.h>
 
-DEFUN_DLD (paramdemo, args, nargout,
-           "Parameter Check Demo.")
+DEFUN_DLD (paramdemo, args, nargout, "Parameter Check Demo")
 {
+  octave_value retval;
   int nargin = args.length ();
-  octave_value retval;
 
   if (nargin != 1)
     print_usage ();
   else if (nargout != 0)
-    error ("paramdemo: function has no output arguments");
+    error ("paramdemo: OUTPUT argument required");
   else
     {
       NDArray m = args(0).array_value ();
@@ -21,14 +20,11 @@
       if (m.any_element_is_inf_or_nan ())
         octave_stdout << "  includes Inf or NaN values\n";
       if (m.any_element_not_one_or_zero ())
-        octave_stdout <<
-          "  includes other values than 1 and 0\n";
+        octave_stdout << "  includes other values than 1 and 0\n";
       if (m.all_elements_are_int_or_inf_or_nan ())
-        octave_stdout <<
-          "  includes only int, Inf or NaN values\n";
+        octave_stdout << "  includes only int, Inf or NaN values\n";
       if (m.all_integers (min_val, max_val))
-        octave_stdout <<
-          "  includes only integers in [-10,10]\n";
+        octave_stdout << "  includes only integers in [-10,10]\n";
     }
   return retval;
 }