zlib 1.2.0.2v1.2.0.2

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diff --git a/contrib/iostream3/README b/contrib/iostream3/README
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+These classes provide a C++ stream interface to the zlib library. It allows you
+to do things like:
+
+  gzofstream outf("blah.gz");
+  outf << "These go into the gzip file " << 123 << endl;
+  
+It does this by deriving a specialized stream buffer for gzipped files, which is
+the way Stroustrup would have done it. :-> 
+
+The gzifstream and gzofstream classes were originally written by Kevin Ruland
+and made available in the zlib contrib/iostream directory. The older version still
+compiles under gcc 2.xx, but not under gcc 3.xx, which sparked the development of 
+this version.
+
+The new classes are as standard-compliant as possible, closely following the 
+approach of the standard library's fstream classes. It compiles under gcc versions 
+3.2 and 3.3, but not under gcc 2.xx. This is mainly due to changes in the standard 
+library naming scheme. The new version of gzifstream/gzofstream/gzfilebuf differs 
+from the previous one in the following respects:
+- added showmanyc
+- added setbuf, with support for unbuffered output via setbuf(0,0)
+- a few bug fixes of stream behavior
+- gzipped output file opened with default compression level instead of maximum level
+- setcompressionlevel()/strategy() members replaced by single setcompression()
+
+The code is provided "as is", with the permission to use, copy, modify, distribute 
+and sell it for any purpose without fee.
+
+Ludwig Schwardt
+<schwardt@sun.ac.za>
+
+DSP Lab
+Electrical & Electronic Engineering Department
+University of Stellenbosch
+South Africa