liuhan 1e3f9fbda3 components/lwip/apps/sntp: modify SNTP function feature ... modify makefile for compile SNTP function in lwip, see sntp file.		2016-09-01 19:22:36 +08:00
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lwip	components/lwip/apps/sntp: modify SNTP function feature	2016-09-01 19:22:36 +08:00