build: Fix compel target on @all

There is no longer phony compel target but compel/compel instead.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Reviewed-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

Makefile

@@ -127,7 +127,7 @@ endif
 CFLAGS			+= $(WARNINGS) $(DEFINES) -iquote include/
 
 # Default target
-all: compel criu lib
+all: compel/compel criu lib
 .PHONY: all
 
 #