2012-07-12 Glenn Morris <rgm@gnu.org>
+ * s/cygwin.h, s/darwin.h, s/gnu-linux.h, s/irix6-5.h:
+ Move PTY_OPEN to configure.
+
* s/aix4-2.h, s/bsd-common.h, s/cygwin.h, s/darwin.h:
* s/gnu-linux.h, s/hpux10-20.h, s/irix6-5.h, s/template.h:
* s/usg5-4-common.h: Move FIRST_PTY_LETTER, PTY_ITERATION to configure.