Add path options for cmake

[glixx]

Needs to add cmake options for gamesbindir, gamesdatadir.
Maintainers of Fedora, Arch Linux do not like the current implementation.

[kaa-ching]

I agree, would work better for the Windows and self-extracting archive packages, too.

The current directory set appears to be just fine for Ubuntu and Mageia.

The variables are already defined in the CMakeLists.txt file, so:

• we need a mechanism to overrule the set variables or at least differentiate
• we need a mechanism to make sure that TBE knows more about the file locations, i.e. generate tbe_paths.h from the settings.
• we need to know what the various paths for the various distros look like.

[kaa-ching]

@glixx: can you help to figure out what the Fedora and ALT packagers want for a directory layout?

[glixx]

For Mageia, Debian, Alt Linux:
gamesbindir=/usr/games
gamesdatadir=/usr/share/games

For Fedora, Arch Linux:
gamesbindir=/usr/bin
gamesdatadir=/usr/share

[kaa-ching]

@glixx: thanks for the info, this will be enough to make it work.

[kaa-ching]

I expect this issue to be closed because we can now adjust the installation paths to all directories during package build.