I see that the files were renamed to prevent confusion with other firmware version. You can the renamed diags ssh image here:
http://gitbrew.org/~dasmoover/kindle/touch/forensic/
You do not need to compile fastboot. You can download binaries ready to go at the "simple debricking" sticky. There is win32 fastboot so you can stay in windows using MfgTool then fastboot for windows.
Some posts were made before the win32 fastboot was provided, but the first post is mostly current and correct.
EDIT: You would not have had this problem if you downloaded the image from the forensic images link in the "simple debricking" sticky. That "mmcblk0p2_ssh.img.gz" has been downloaded hundreds of times and is still available at the link provided there.