Remove more old und untouched documents

 - upnp/LICENSE and LICENSE are the same files, put the content into
   COPYING (with whitespace stripped) which is automatically included in
   the distribution.
 - THANKS is also automatically distributed and doesn't need explicit
   mentioning.
 - README doesn't exist since commit aa343fa.
 - TODO doesn't exist since 0629cfb.
 - NEWS is old and so removed

This allows to drop doc_DATA completely. A side effect is that the
license and thanks files are not installed any more. But given that
installing the documentation was broken for quite some time already,
this is probably fine and nobody will notice it.

COPYING

@@ -0,0 +1,26 @@
+Copyright (c) 2000-2003 Intel Corporation
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+* 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 name of Intel Corporation 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Makefile.am

@@ -15,8 +15,6 @@ SUBDIRS = \
 EXTRA_DIST = \
 	Doxyfile \
 	libupnp.pc.in \
-	LICENSE \
-	THANKS \
 	libupnp.spec \
 	build/msvc/inttypes.h \
 	build/msvc/stdint.h
@@ -27,9 +25,6 @@ EXTRA_DIST = \
 pkgconfigexecdir = $(libdir)/pkgconfig
 pkgconfigexec_DATA = libupnp.pc
 
-
 $(pkgconfigexec_DATA): config.status
 
-doc_DATA = LICENSE README NEWS TODO THANKS
-
 CLEANFILES = IUpnpErrFile.txt IUpnpInfoFile.txt

upnp/Makefile.am

@@ -203,12 +203,9 @@ test_url_SOURCES = test/test_url.c
 
 
 EXTRA_DIST = \
-	LICENSE \
 	m4/libupnp.m4 \
 	src/win_dll.c
 
-
 CLEANFILES = \
 	IUpnpErrFile.txt \
 	IUpnpInfoFile.txt
-