FreeBASIC Xbox 1.20.1

This package is intended to run without a separate nxdk installation.

The installer adds these directories to the Windows system PATH:

    C:\freebasic-xbox
    C:\freebasic-xbox\bin
    C:\freebasic-xbox\nxdk\bin

Use fbc-xbox.cmd from cmd.exe or PowerShell:

    fbc-xbox.cmd program.bas -x program.xbe

The package also includes fbc-xbox-xiso.cmd and fbc-xbox-xiso.sh.  They stage
an XBE as default.xbe and pack the XISO disc-image format expected by
full-system Xbox emulators such as xemu:

    fbc-xbox-xiso.cmd program.xbe program.iso

Programs that need a current-directory asset tree can stage one into the XISO:

    fbc-xbox-xiso.cmd program.xbe program.iso --assets game-folder
    ./fbc-xbox-xiso.sh program.xbe program.iso --assets game-folder

The bundled nxdk tools still include extract-xiso for lower-level packaging
workflows.

This is an experimental nxdk-based revival path for the existing FreeBASIC
Xbox target. The package validation checks that the compiler can invoke the
bundled nxdk clang/link/cxbe toolchain and produce an Xbox XBE file.

The packaged nxdk checkout revision is:

    29638d0
