gem5: codebase patched to compile with ag++

This changes allows us to compile the gem5 simulator with ag++. It
was tested with ag++ v0.8, built Apr 18 2013. Most of the changes
are preprocessor directives like #ifndef __puma which have been
inserted into the gem5 code. Unfortunately, a python script and a
SWIG input file have been patched, too.
Additionally, the CMake file has been updated. A single call to
"make" now invokes the ag++ (instead of the g++) compiler front
end. The new CMake target "gem5-allclean" should be used to clean
the current project when building FailGem5. In addition to cleaning
the Fail build directory, it also invokes "scons -c" in the gem5
build directory; that is, gem5 is cleaned as well.

Change-Id: I20a92f025f34f626b81e30f2c873baeba189f83b

simulators/gem5/src/mem/ruby/network/orion/ConfigFile.cc

@@ -41,8 +41,9 @@ ConfigFile::ConfigFile( string filename, string delimiter,
     std::ifstream in( filename.c_str() );
 
     if( !in ) throw file_not_found( filename ); 
-
+#ifndef __puma
     in >> (*this);
+#endif
 }
 
 

simulators/gem5/src/mem/ruby/network/orion/OrionConfig.hh

@@ -103,7 +103,9 @@ T OrionConfig::get(const string& key_) const
     it = m_params_map.find(key_);
     if (it == m_params_map.end()) 
     {
+#ifndef __puma // error: invalid operand to binary `<<'
         std::cerr << key_ << " NOT FOUND!" << std::endl;
+#endif
         throw key_not_found(key_);
     }
     return string_as_T<T>(it->second);
@@ -138,8 +140,10 @@ inline bool OrionConfig::string_as_T<bool>(const string& str_)
     }
     else
     {
+#ifndef __puma
         std::cerr << "Invalid bool value: '" << str_ <<
           "'. Treated as FALSE." << std::endl;
+#endif
         ret = false;
     }
     return ret;