Do not call ftruncate unless output is a regular file

style(9) fix as noted

Note that in any case, boot0 does also hardcode its origin in the asm source, with the following comment:

Thanks for your feedback, Warner! I will send an updated patch.

(please ignore the boot2.c change, it is unrelated, and was included in this diff by mistake)

Reorganize per jhb's comments

Committed to head.

Unless further discussion takes place, I intend to commit the last version of this change at the end of the week.

New version introducing weak aliases

Indeed, the weak aliases make sense, and avoid the need to bump the major. I'll produce an update patch. Thanks!

Not entirely clear to me how symbol versioning would help here. libmd provides just one version of these symbols, and we need to prevent any reference to the same-named symbols in libcrypto from getting (erroneously) resolved to the libmd version.

@cperciva @roberto would you mind commenting on the second version (updated to uniformly prefix all symbols in libmd, rather than just those that actually, currently conflict with libcrypto)?

Alternate version prefixing all symbols in libmd.

I deliberately prefixed only those specific symbols that do clash with libcrypto. But indeed we could just as well consistently prefix all symbols in libmd.

PORTREVISION bumped in rev. 383141.

Bump PORTREVISION as instructed

Reopening per Mat's comment: need to bump PORTREVISION.

Committed as rev. 383136.