Added 1.2 release announcement.

ANNOUNCE.1.2

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+GNUstep Objective-C Runtime 1.2
+===============================
+
+This is the 1.2 release of the GNUstep Objective-C runtime (a.k.a.
+libobjc2).  This runtime was designed to support the features of Objective-C 2
+for use with GNUstep and other Objective-C programs.  This release contains
+several bug fixes, and is tested with the current GNUstep trunk, so will be
+compatible with the upcoming GNUstep release.
+
+You may obtain the code for this release from subversion at the following
+subversion branch:
+
+svn://svn.gna.org/svn/gnustep/libs/libobjc2/1.2
+
+Alternatively, a tarball is available from:
+
+http://download.gna.org/gnustep/libobjc2-1.2.tar.bz2
+
+The runtime library is responsible for implementing the core features of the
+object model, as well as exposing introspection features to the user.  The
+GNUstep runtime implements Apple's Objective-C Runtime APIs, and a small number
+of GCC APIs for legacy compatibility.
+
+This library is based on the Étoilé Objective-C Runtime, an earlier research
+prototype, and includes support for non-fragile instance variables,
+type-dependent dispatch, and object planes.  It is fully compatible with the
+FSF's GCC Objective-C ABI and also implements a new ABI that is supported by
+Clang and is required for some of the newer features.
+
+Although the runtime has been tested by several people, and is being used
+extensively by the Étoilé project, it is entirely new (MIT licensed) code and
+may still contain bugs.  If you come across any problems, please report them to
+the GNUstep Developer mailing list <gnustep-dev@gnu.org>.