added the newgui option for configure

configure.ac

sflphonegui-uml.xmi

src/gui/Makefile.am

src/gui/official/account.cpp

src/gui/official/account.h

src/gui/official/call.cpp

src/gui/official/call.h

src/gui/official/objectpool.h

src/gui/official/request.cpp

src/gui/official/request.h

src/gui/official/requesterimpl.cpp

src/gui/official/requesterimpl.h

src/gui/official/sessionio.cpp

src/gui/official/sessionio.h

utilspp/singleton/SingletonHolder.hpp