sh(1): Add and use pregenerated headers.

These only add 30k to the repo while ensuring that bin/sh would not be
affected by bad shell script invocation etc. As the bonus it solves the
issue in share

sh(1): Add and use pregenerated headers.

These only add 30k to the repo while ensuring that bin/sh would not be
affected by bad shell script invocation etc. As the bonus it solves the
issue in share/initrd too. Nothing in the generated headers should fail
for our use cases. If that would change, please report it.

show more ...