makefs(8): Nix trailing whitespace.

Computed by machine, eyeballed by hand, so to speak.

Sanitize the symbol namespace. NFC.

Need strings.h for ffs()

Add support to msdosfs and makefs to generate correct Unicode (UCS-2) directory
entries from UTF8 encoded file names.

Make the userland signature and uses of bread() match the kernel ones,
after the removal of the cred argument.

What a terrible use-after-free

- don't abuse vp->fs to mean struct fs for ffs and struct msdos_opts;
make it always fsinfo_t and change void * to that.
- kill unused structure members.

- use emalloc and friends
- kill a bunch of global variables, more work to be done here
- homogenize option parsing. more work for cd9660
- use the new options parsing code to print an fs-specific us

- use emalloc and friends
- kill a bunch of global variables, more work to be done here
- homogenize option parsing. more work for cd9660
- use the new options parsing code to print an fs-specific usage

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This works well enough to populate plain files in the root dir. creating
directories fails.

fixed directory entry allocation. Now the file data remains and is currently
broken.

make this cross-compile friendly.

add debugging, fix warnings.

add more msdos stuff.