Add set-binary-mode primitive to switch a standard stream to binary I/O.

 src/fileio.c: Include binary-io.h.
 (Fset_binary_mode): New function.
 (syms_of_fileio): Defsubr it.
 (syms_of_fileio) <Qstdin, Qstdout, Qstderr>: DEFSYM them.

 admin/unidata/unidata/uvs.el (uvs-print-table-ivd): Call set-binary-mode on
 stdout.

 doc/lispref/streams.texi (Input Functions): Document 'set-binary-mode'.
 (Output Functions): Cross-reference to documentation of
 'set-binary-mode'.

 etc/NEWS: Mention 'set-binary-mode'.

2 files changed, 8 insertions, 0 deletions

diff --git a/etc/ChangeLog b/etc/ChangeLog
index 20f88bdecc3..681858e5977 100644
--- a/etc/ChangeLog
+++ b/etc/ChangeLog
@@ -1,3 +1,7 @@
+2015-01-15  Eli Zaretskii  <eliz@gnu.org>
+
+        * NEWS: Mention 'set-binary-mode'.
+
 2015-01-11  Paul Eggert  <eggert@cs.ucla.edu>
 
         Default to 'configure --enable-silent-rules'
diff --git a/etc/NEWS b/etc/NEWS
index f291c0c9ad9..0bfd3fd2a2d 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -588,6 +588,10 @@ been obsoleted.
 undocumented integer-pair format.  Instead, they return a list of two
 integers.
 
++++
+** New function `set-binary-mode' allows to switch a standard stream
+of the Emacs process to binary I/O mode.
+
 
 * Changes in Frames and Windows Code in Emacs 25.1