Add binfmt_misc override

[lucyllewy]

The changes are:

• Ensure we always use the same systemd command line if it is ever changed in one place it is updated in all other places via using a variable
• Don't go into an infinite loop waiting for systemd to start
• Don't try to use $HOME/.systemd-env if it doesn't exist
• Don't update /etc/bash.bashrc if the changes are already present - e.g. if the install script is run multiple times
• Disable systemd's attempts to re-mount /proc/sys/fs/binfmt_misc because it is already mounted by WSL and the re-mount breaks WSL Interoparability (Issue #15)
• Provide manual command instructions in the case that we can't automatically update the Windows environment using WSL Interoperability

Fixes #15

Signed-off-by: Daniel Llewellyn daniel@bowlhat.net

[hnakamur]

Thanks for a fix for Issue #15 and other improvements! I confirmed this version works correctly and fixes Issue #15.

[DamionGans]

Thanks so much for your contributions :) will merge