Add -Wno-strict-aliasing because boost breaks that too much.

bitcoin-qt.pro

@@ -50,7 +50,7 @@ QMAKE_CXXFLAGS += -fstack-protector
 QMAKE_LFLAGS += -fstack-protector
 
 # disable quite some warnings because bitcoin core "sins" a lot
-QMAKE_CXXFLAGS_WARN_ON = -fdiagnostics-show-option -Wall -Wno-invalid-offsetof -Wno-unused-variable -Wno-unused-parameter -Wno-sign-compare -Wno-char-subscripts  -Wno-unused-value -Wno-sequence-point -Wno-parentheses -Wno-unknown-pragmas -Wno-switch
+QMAKE_CXXFLAGS_WARN_ON = -fdiagnostics-show-option -Wall -Wno-strict-aliasing -Wno-invalid-offsetof -Wno-unused-variable -Wno-unused-parameter -Wno-sign-compare -Wno-char-subscripts  -Wno-unused-value -Wno-sequence-point -Wno-parentheses -Wno-unknown-pragmas -Wno-switch
 
 # Input
 DEPENDPATH += src/qt src src json/include