Branch monolithic build no more works

[Pavel Sanda]

  CXX    liblyxqt4.o
  In file included from liblyxqt4.cpp:23:0:
  GuiBranches.cpp: In member function 'virtual bool 
lyx::frontend::GuiBranches::eventFilter(QObject*, QEvent*)':
  GuiBranches.cpp:83:23: error: expected unqualified-id before numeric constant
  GuiBranches.cpp:83:23: error: expected ')' before numeric constant