Expand options to support 3 possible sources of octave * configure.ac: modify --enable-stable rule to --enable-octave=source (stable,alpha,default) * Makefile.am: modify OCTAVE_TARGET based on octave build value set in configure. * index.html: added master-octave information. * src/default-octave.mk: new file. * src/default-octave-1-docinstall.patch * dist-files.mk: add default-octave-1-docinstall.patch default-octave.mk * binary-dist-rules.mk: use OCTAVE_TARGET to decide on tarball/installer name

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Insist that ssize_t is defined.

diff --git a/util/cairo-missing/cairo-missing.h b/util/cairo-missing/cairo-missing.h
index 7e4f0a3..c20b869 100644
--- a/util/cairo-missing/cairo-missing.h
+++ b/util/cairo-missing/cairo-missing.h
@@ -37,6 +37,8 @@
 #include <string.h>
 #include <sys/types.h>
 
+#define _SSIZE_T_DEFINED 1
+
 #ifdef _WIN32
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>