Improved return code handling in ecmdsetup.pl
Improved return code handling in ecmdsetup.pl

- The inline return that was at the end of the return string was
  causing anything after that line in an alias/function to not
  be executed
  It can now be optionally disabled with "noret"

Signed-off-by: Jason Albert <fa03034561e2b166380dd3e144e93f10ef6a69c2@us.ibm.com>

open-power/eCMD,open-power/eCMD,open-power/eCMD,mklight/eCMD,mklight/eCMD,mklight/eCMD,open-power/eCMD,mklight/eCMD,open-power/eCMD,mklight/eCMD