Add native support for ed-style diffs. No need to pledge "proc exec" anymore.

ok deraadt

Do not call out mkdir -p, but reuse the code from mkdir(1).

Removes the possibility of nasty stuff happening thanks to unquoted
arguments in system(1).

Also plug a small memory leak.

Problems noti

Do not call out mkdir -p, but reuse the code from mkdir(1).

Removes the possibility of nasty stuff happening thanks to unquoted
arguments in system(1).

Also plug a small memory leak.

Problems noticed by Lionel Fourquaud.

okay millert@, deraadt@

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remove junk; ok otto tedu

Support the long options that FSF's patch version has. $OpenBSD$ added

initial import of NetBSD tree