Initial .OptionalPackageDescription files for many of the Haiku Optional Packages, and a few license files.

sys-devel/autoconf/autoconf.OptionalPackageDescription

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+Package:	Autoconf
+Version:	2.64
+Copyright:	1992-2009 Free Software Foundation, Inc.
+License:	GNU GPL v2
+License:	GNU GPL v3
+URL:		http://www.gnu.org/software/autoconf

sys-devel/automake/automake.OptionalPackageDescription

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+Package:		Automake
+Version:		1.11
+Copyright:		2009 Free Software Foundation, Inc.
+License:		GNU GPL v2
+URL:			http://www.gnu.org/software/automake/

sys-devel/bison/bison.OptionalPackageDescription

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+Package:	Bison
+Version:	2.4.1
+Copyright:	1992-2008 Free Software Foundation, Inc.
+License:	GNU GPL v3
+URL:		http://www.gnu.org/software/bison/

sys-devel/flex.OptionalPackageDescription

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+Package:	Flex
+Version:	2.5.35
+Copyright:	2001-2007 The Flex Project; 1990, 1997 The Regents of the University of California
+License:	Flex
+URL:		http://flex.sourceforge.net/

sys-devel/flex/licenses/Flex

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+Flex carries the copyright used for BSD software, slightly modified
+because it originated at the Lawrence Berkeley (not Livermore!) Laboratory,
+which operates under a contract with the Department of Energy:
+
+Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007 The Flex Project.
+
+Copyright (c) 1990, 1997 The Regents of the University of California.
+All rights reserved.
+
+This code is derived from software contributed to Berkeley by
+Vern Paxson.
+
+The United States Government has rights in this work pursuant
+to contract no. DE-AC03-76SF00098 between the United States
+Department of Energy and the University of California.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+Neither the name of the University nor the names of its contributors
+may be used to endorse or promote products derived from this software
+without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.
+
+This basically says "do whatever you please with this software except
+remove this notice or take advantage of the University's (or the flex
+authors') name".
+
+Note that the "flex.skl" scanner skeleton carries no copyright notice.
+You are free to do whatever you please with scanners generated using flex;
+for them, you are not even bound by the above copyright.

sys-devel/jam/jam.OptionalPackageDescription

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+Package:		Jam
+Version:		2.5-haiku-20080327
+Copyright:		1993-2003 Christopher Seiwald
+Description:	A version of the build tool jam modified for Haiku.
+License:		Jam
+URL:			http://www.perforce.com/jam/jam.html

sys-devel/jam/licenses/Jam

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+/*
+ * /+\
+ * +\   Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc.
+ * \+/
+ *
+ * License is hereby granted to use this software and distribute it
+ * freely, as long as this copyright notice is retained and modifications
+ * are clearly marked.
+ *
+ * ALL WARRANTIES ARE HEREBY DISCLAIMED.
+ */

sys-devel/m4/m4.OptionalPackageDescription

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+Package:	GNU M4
+Version:	1.4.13
+Copyright:	2000, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+License:	GNU GPL v3
+URL:		http://www.gnu.org/software/m4