fix libs/libs/ glitch

[SVN r19380]

tools/regression/process_jam_log.cpp

@@ -422,6 +422,7 @@ int cpp_main( int argc, char ** argv )
       info.file_path = line.substr( pos+3,
         line.find( "\"", pos+3 )-pos-3 );
       convert_path_separators( info.file_path );
+      if ( info.file_path.find( "libs/libs/" ) == 0 ) info.file_path.erase( 0, 5 );
       test2info.insert( std::make_pair( test_name, info ) );
 //      std::cout << test_name << ", " << info.type << ", " << info.file_path << "\n";
       continue;