add Solaris

Author: Vladimir Kotal

intro.tex

@@ -71,7 +71,7 @@
 are compliant with the previous version SUSv3
 (\url{http://www.opengroup.org/openbrand/register/xy.htm}).
 \item The specific source code examples linked from this material are usually
-tested on macOS and Linux.
+tested on Solaris, macOS and Linux.
 \end{itemize}
 
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