Cross Reference: /external/nanopb-c/tests/multiple_files

`Name`	`Date`	`Size`
Up to higher level directory
`callbacks.proto`	21-Aug-2018	`425`
`callbacks2.proto`	21-Aug-2018	`270`
`SConscript`	21-Aug-2018	`323`
`test_multiple_files.c`	21-Aug-2018	`177`