util/cexec: Add convenience methods for taking strings
util/cexec: Add convenience methods for taking strings

Change-Id: I2c62b16d827cd9cb45e32d4c7a497bd064fbbc16
Signed-off-by: William A. Kennington III <30fff5198f4d10ca1117e5f3ec82f3b4b8900d81@google.com>

openbmc/stdplus,openbmc/stdplus