Add no-strict-aliasing to genl

The genl code uses constructs which violate the strict aliasing
constraints of gcc 4.4. Disable the optimization to avoid warnings
and potential breakage.
diff --git a/genl/Makefile b/genl/Makefile
index 44bb83c..03d1f26 100644
--- a/genl/Makefile
+++ b/genl/Makefile
@@ -3,6 +3,8 @@
 include ../Config
 SHARED_LIBS ?= y
 
+CFLAGS += -fno-strict-aliasing
+
 GENLMODULES :=
 GENLMODULES += ctrl.o