statements like
  Dim AppEnd As Integer
will generate compiler errors because Append is a special symbol/keyword in libreoffice basic. This restriction though is too strict because 'Append' is only such a keyword when used within the 'Open' statement ( where it refers to one of the possible values for a paramater ).

I.e. BASIC stuff for iOS and database connectivity stuff when using
--disable-database-connectivity. All of this quite experimental so
far, using the latter will break your build.

mmeeks suggests we don't want setIniFilename(), who am i to disagree? :)

tml reminds us that use a generic and potentially clash-prone word
like HEADLESS as preprocessor defintion is pretty lame.
He suggests to put it under the already used LIBO namespace.
To sum it up let's do a s/HEADLESS/LIBO_HEADLESS/g.

This reverts commit 8c674283, which had been
obsoleted by e69b8a75 "disabled officecfg
unittest due to dependencies problems."

Define HEADLESS globally as it is meant to be.

however, limit the line width from above by legend entry height
(which +- matches the font height)

Thanks to Cor Nouws