obj: add more set and namespace functions

include/socks/compiler.h

@@ -1,9 +1,16 @@
 #ifndef SOCKS_COMPILER_H_
 #define SOCKS_COMPILER_H_
 
+#undef __used
 #define __used __attribute__((used))
+
+#undef __packed
 #define __packed __attribute__((packed))
+
+#undef __section
 #define __section(name) __attribute__((section(name)))
+
+#undef __aligned
 #define __aligned(x) __attribute__((aligned(x)))
 
 #endif