Simplify configuration.

Remove support for (outdated) <strstream>, require <sstream>.
Require uint32_t for now, defined in stdint.h according to C99.
Some general cleanup and more documentation.

eo/src/utils/eoParser.cpp

@@ -90,11 +90,7 @@ eoParser::eoParser ( unsigned _argc, char **_argv , string _programDescription,
         }
     }
     // now read arguments on command-line
-#ifdef HAVE_SSTREAM
     stringstream stream;
-#else
-    strstream stream;
-#endif
     for (i = 1; i < _argc; ++i)
     {
         stream << _argv[i] << '\n';