[s1898] Further fixes for extract tools. Thanks danielsreichenbach

The patch will allow map files to be extracted with binaries built on Linux, since they currently do fail when extraction maps, since Linux is case-sensitive when it comes to file names.

This removes the need to run pre-built Windows binaries under Linux to extract and assemble map data.

Signed-off-by: Salja <salja2012@hotmail.de>