[IMPR] Provide a dynamic option help string offset

Authored by Xqt on Apr 16 2018, 8:36 AM.

Description

[IMPR] Provide a dynamic option help string offset

Currently the help string option offset is fixed to 16 spaces but
this does not fit for all help strings. Provide a dynamic offset.

Change-Id: Iaf7d8b16bc15e0c0a55ad6bd3a1a38a21ababc16