[ros-svn] [royce] 12902: use enum instead of string in more places

[royce at svn.reactos.com]

use enum instead of string in more places


Updated files:
branches/xmlbuildsystem/reactos/tools/rbuild/backend/mingw/mingw.cpp
branches/xmlbuildsystem/reactos/tools/rbuild/backend/mingw/modulehandler.cpp
branches/xmlbuildsystem/reactos/tools/rbuild/backend/mingw/modulehandler.h
branches/xmlbuildsystem/reactos/tools/rbuild/exception.cpp
branches/xmlbuildsystem/reactos/tools/rbuild/exception.h
branches/xmlbuildsystem/reactos/tools/rbuild/module.cpp
branches/xmlbuildsystem/reactos/tools/rbuild/rbuild.h