Cross Reference: /external/ping

`Name`	`Date`	`Size`
Up to higher level directory
`Android.mk`	25-Jul-2013	`139`
`CleanSpec.mk`	25-Jul-2013	`2.2K`
`NOTICE`	25-Jul-2013	`1.8K`
`ping.c`	25-Jul-2013	`32.5K`
`ping_common.c`	25-Jul-2013	`20K`
`ping_common.h`	25-Jul-2013	`5.2K`
`SNAPSHOT.h`	25-Jul-2013	`35`