allow most header files to be compiled separately * build-aux/mk-opts.pl: Include <limits> in generated header files. * file-io.h, ls-hdf5.h, ls-mat-ascii.h, ls-mat4.h, ls-mat5.h, ls-oct-binary.h, ls-oct-text.h, ls-utils.h, mxarray.in.h, octave-link.h, octave-preserve-stream-state.h, pt-check.h, pt-tm-const.h, DAERTFunc.h, aepbalance.h, eigs-base.h, Sparse-diag-op-defs.h, Sparse-op-defs.h, Sparse-perm-op-defs.h, action-container.h, oct-rl-edit.h, url-transfer.h: Include additional headers or use forward declarations to allow successful compilation of the file by itself.

--- a/liboctave/util/url-transfer.h	Wed Apr 26 01:05:39 2017 -0400
+++ b/liboctave/util/url-transfer.h	Wed Apr 26 01:20:50 2017 -0400
@@ -33,6 +33,10 @@
 #include <iosfwd>
 #include <string>
 
+#include "str-vec.h"
+
+template <typename T> class Array;
+
 namespace octave
 {
   class