Update to opus-HEAD-66611f1.

INSTALL

Index: INSTALL
diff --git a/INSTALL b/INSTALL
index a1e89e18ad20c227845f2099cb9894c799265d19..2099840756e6302d837dcd51b5dcd6262f7adb16 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,7 +1,7 @@
 Installation Instructions
 *************************
 
-Copyright (C) 1994-1996, 1999-2002, 2004-2011 Free Software Foundation,
+Copyright (C) 1994-1996, 1999-2002, 2004-2013 Free Software Foundation,
 Inc.
 
    Copying and distribution of this file, with or without modification,
@@ -12,8 +12,8 @@ without warranty of any kind.
 Basic Installation
 ==================
 
-   Briefly, the shell commands `./configure; make; make install' should
-configure, build, and install this package.  The following
+   Briefly, the shell command `./configure && make && make install'
+should configure, build, and install this package.  The following
 more-detailed instructions are generic; see the `README' file for
 instructions specific to this package.  Some packages provide this
 `INSTALL' file but do not implement all of the features documented
@@ -309,9 +309,10 @@ causes the specified `gcc' to be used as the C compiler (unless it is
 overridden in the site shell script).
 
 Unfortunately, this technique does not work for `CONFIG_SHELL' due to
-an Autoconf bug.  Until the bug is fixed you can use this workaround:
+an Autoconf limitation.  Until the limitation is lifted, you can use
+this workaround:
 
-     CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
+     CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash
 
 `configure' Invocation
 ======================
@@ -367,4 +368,3 @@ operates.
 
 `configure' also accepts some other, not widely useful, options.  Run
 `configure --help' for more details.
-