INI file parsing: Improve handling of spaces before and after =

[PiKeyAr]

In INI file parsing, spaces before and after the = seem to get in the way of parsing values.

For example Key=value works but Key = value doesn't.

I think it would be fine to check the characters (since there can be multiple spaces or tabs) before the = and, if they exist, assume there are spaces or tabs before the value text begins.