[syslinux] utils/isohybrid.c #inclusion of <uuid/uuid.h>

[Shao Miller]

Good day, Matthew.

I recently got stuck while building Syslinux as <uuid/uuid.h> doesn't exist
on my system.  The #inclusion was introduced in commit
2c3a24e5f4b807ec31595227afa59a818c060ca9.  Whence does this file come, if
you please?  I'm assuming it is the Linux kernel's, but can't seem to
understand the directory prefix, in that case.

- Shao