added: TextStream a class similar to std::ostringstream

but with a Clear() method
       the dynamic allocated buffer can be easily reused
added: DbTextStream a special version of a stream
       used to create a database string query
       everything is escaped by default
added: DbBase a base class with some basic methods for communicating
       with the database
added: DbConn a class for managing connection to the database
changed: some refactoring in Db class       



git-svn-id: svn://ttmath.org/publicrep/winix/trunk@655 e52654a7-88a9-db11-a3e9-0013d4bc506e

templates/user.cpp

@@ -34,6 +34,17 @@ void user_name(Info & i)
 }
 
 
+void user_is_in_group(Info & i)
+{
+	long gid = system->groups.GetGroupId(i.par);
+
+	if( !request->session->puser || gid == -1 )
+		return;
+
+	i.res = request->session->puser->IsMemberOf(gid);
+}
+
+
 
 void user_super_user(Info & i)
 {