make: Build crtools with -O2 by default

Enable debugging only if DEBUG=1 provided.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Makefile

 include Makefile.inc
 
-CFLAGS		+= -I./include
-CFLAGS		+= -O0 -ggdb3 -fno-strict-aliasing
+CFLAGS		+= -I./include -fno-strict-aliasing
 
 LIBS		+= -lrt -lpthread -lprotobuf-c
 
@@ -16,6 +15,13 @@ ifeq ($(DEBUG),1)
 	DEFINES += -DCR_DEBUG
 endif
 
+ifeq ($(DEBUG),1)
+	DEFINES += -DCR_DEBUG
+	CFLAGS	+= -O0 -ggdb3
+else
+	CFLAGS	+= -O2
+endif
+
 WARNINGS	+= -Wall
 CFLAGS		+= $(WARNINGS) $(DEFINES)