move docstrings in C++ files out of C strings and into comments * __contourc__.cc, __dispatch__.cc, __dsearchn__.cc, __ichol__.cc, __ilu__.cc, __lin_interpn__.cc, __luinc__.cc, __magick_read__.cc, __pchip_deriv__.cc, __qp__.cc, balance.cc, besselj.cc, betainc.cc, bitfcns.cc, bsxfun.cc, cellfun.cc, colloc.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, debug.cc, defaults.cc, det.cc, dirfns.cc, dlmread.cc, dot.cc, eig.cc, ellipj.cc, error.cc, fft.cc, fft2.cc, fftn.cc, file-io.cc, filter.cc, find.cc, gammainc.cc, gcd.cc, getgrent.cc, getpwent.cc, getrusage.cc, givens.cc, graphics.cc, hash.cc, help.cc, hess.cc, hex2num.cc, input.cc, inv.cc, kron.cc, load-path.cc, load-save.cc, lookup.cc, ls-oct-text.cc, lsode.cc, lu.cc, mappers.cc, matrix_type.cc, max.cc, mgorth.cc, nproc.cc, oct-hist.cc, octave-link.cc, ordschur.cc, pager.cc, pinv.cc, pr-output.cc, profiler.cc, psi.cc, pt-jit.cc, quad.cc, quadcc.cc, qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, sighandlers.cc, sparse.cc, spparms.cc, sqrtm.cc, str2double.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc, sylvester.cc, symtab.cc, syscalls.cc, sysdep.cc, time.cc, toplev.cc, tril.cc, tsearch.cc, typecast.cc, urlwrite.cc, utils.cc, variables.cc, __delaunayn__.cc, __eigs__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc, __init_gnuplot__.cc, __osmesa_print__.cc, __voronoi__.cc, amd.cc, audiodevinfo.cc, audioread.cc, ccolamd.cc, chol.cc, colamd.cc, convhulln.cc, dmperm.cc, fftw.cc, qr.cc, symbfact.cc, symrcm.cc, ov-base.cc, ov-bool-mat.cc, ov-cell.cc, ov-class.cc, ov-classdef.cc, ov-fcn-handle.cc, ov-fcn-inline.cc, ov-flt-re-mat.cc, ov-int16.cc, ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-java.cc, ov-null-mat.cc, ov-oncleanup.cc, ov-range.cc, ov-re-mat.cc, ov-struct.cc, ov-typeinfo.cc, ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc, ov-usr-fcn.cc, ov.cc, octave.cc, pt-arg-list.cc, pt-binop.cc, pt-eval.cc, pt-mat.cc, lex.ll, oct-parse.in.yy: Docstrings are now comments instead of C strings. * build-aux/mk-opts.pl: Emit docstrings as comments instead of C strings. * DASPK-opts.in, LSODE-opts.in: Don't quote " in docstring fragments. * builtins.h: Include builtin-defun-decls.h unconditionally. * defun.h (DEFUN, DEFUNX, DEFCONSTFUN): Simply emit declaration. (DEFALIAS): Always expand to nothing. * defun-dld.h: No special macro expansions for MAKE_BUILTINS. (DEFUN_DLD): Use FORWARD_DECLARE_FUN. (DEFUNX_DLD): Use FORWARD_DECLARE_FUNX. * defun-int.h: No special macro expansions for MAKE_BUILTINS. (FORWARD_DECLARE_FUN, FORWARD_DECLARE_FUNX): New macros. (DEFINE_FUN_INSTALLER_FUN): If compiling an Octave source file, pass "external-doc" to DEFINE_FUNX_INSTALLER_FUN. (DEFUN_INTERNAL, DEFCONSTFUN_INTERNAL, DEFUNX_INTERNAL, DEFALIAS_INTERNAL): Delete. * common.mk (move_if_change_rule): New macro. (simple_move_if_change_rule): Define using move_if_change_rule. * find-defun-files.sh (DEFUN_PATTERN): Update. Don't transform file name extension to ".df". * libinterp/mk-pkg-add, gendoc.pl: Operate directly on source files. * mkbuiltins: New argument, SRCDIR. Operate directly on source files. * mkdefs: Delete. * libinterp/module.mk (BUILT_SOURCES): Update list to contain only files included in other source files. (GENERATED_MAKE_BUILTINS_INCS, DEF_FILES): Delete. (LIBINTERP_BUILT_DISTFILES): Include $(OPT_HANDLERS) here. (LIBINTERP_BUILT_NODISTFILES): Not here. Remove $(ALL_DEF_FILES from the list. (libinterp_EXTRA_DIST): Remove mkdefs from the list. (FOUND_DEFUN_FILES): Rename from SRC_DEF_FILES. (DLDFCN_DEFUN_FILES): Rename from DLDFCN_DEF_FILES. (SRC_DEFUN_FILES): Rename from SRC_DEF_FILES. (ALL_DEFUN_FILES): Rename from ALL_DEF_FILES. (%.df: %.cc): Delete pattern rule. (libinterp/build-env-features.cc, libinterp/builtins.cc, libinterp/dldfcn/PKG_ADD): Use mv instead of move-if-change. (libinterp/builtins.cc, libinterp/builtin-defun-decls.h): Update mkbuiltins command. ($(srcdir)/libinterp/DOCSTRINGS): Update gendoc.pl command. * liboctave/module.mk (BUILT_SOURCES): Don't include liboctave-build-info.cc in the list.

--- a/build-aux/mk-opts.pl	Tue Jun 21 13:08:25 2016 -0700
+++ b/build-aux/mk-opts.pl	Tue Jun 21 16:07:51 2016 -0400
@@ -155,7 +155,6 @@
           {
             $DOC_ITEM[$OPT_NUM] .= $_;
           }
-          $DOC_ITEM[$OPT_NUM] =~ s/\n/\\n\\\n/g;
         }
       elsif (/^\s*TYPE\s*=\s*"(.*)"\s*$/)
         {
@@ -231,14 +230,14 @@
 
   if (not defined $DOC_STRING)
     {
-      $DOC_STRING = "Query or set options for the function \@code{$FCN_NAME}.\\n\\
-\\n\\
-When called with no arguments, the names of all available options and\\n\\
-their current values are displayed.\\n\\
-\\n\\
-Given one argument, return the value of the option \@var{opt}.\\n\\
-\\n\\
-When called with two arguments, \@code{$OPT_FCN_NAME} sets the option\\n\\
+      $DOC_STRING = "Query or set options for the function \@code{$FCN_NAME}.
+
+When called with no arguments, the names of all available options and
+their current values are displayed.
+
+Given one argument, return the value of the option \@var{opt}.
+
+When called with two arguments, \@code{$OPT_FCN_NAME} sets the option
 \@var{opt} to value \@var{val}.";
     }
 }
@@ -906,27 +905,27 @@
 {
   print <<"_END_EMIT_OPTIONS_FUNCTION_HDR_";
 DEFUN ($OPT_FCN_NAME, args, ,
-  "-*- texinfo -*-\\n\\
-\@deftypefn  {} {} $OPT_FCN_NAME ()\\n\\
-\@deftypefnx {} {val =} $OPT_FCN_NAME (\@var{opt})\\n\\
-\@deftypefnx {} {} $OPT_FCN_NAME (\@var{opt}, \@var{val})\\n\\
-$DOC_STRING\\n\\
-\\n\\
-Options include\\n\\
-\\n\\
-\@table \@code\\n\\
+       doc: /* -*- texinfo -*-
+\@deftypefn  {} {} $OPT_FCN_NAME ()
+\@deftypefnx {} {val =} $OPT_FCN_NAME (\@var{opt})
+\@deftypefnx {} {} $OPT_FCN_NAME (\@var{opt}, \@var{val})
+$DOC_STRING
+
+Options include
+
+\@table \@code
 _END_EMIT_OPTIONS_FUNCTION_HDR_
 # FIXME: Add extra newline above
 
   for (my $i = 0; $i < $OPT_NUM; $i++)
     {
-      print '@item @qcode{\"', $NAME[$i], '\"}\n\\', "\n";
+      print '@item @qcode{"', $NAME[$i], '"}', "\n";
       print $DOC_ITEM[$i] if $DOC_ITEM[$i];
     }
 
   print <<"_END_EMIT_OPTIONS_FUNCTION_BODY_";
-\@end table\\n\\
-\@end deftypefn")
+\@end table
+\@end deftypefn */)
 {
   octave_value_list retval;