[Issue 19427] Add core.sys.posix.unistd & core.sys.posix.sys.types definitions for OpenBSD

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19427

Nathan S. <n8sh.secondary at hotmail.com> changed:

           What    |Removed                     |Added
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            Summary|Add core.sys.posix.unistd   |Add core.sys.posix.unistd &
                   |definitions for OpenBSD     |core.sys.posix.sys.types
                   |                            |definitions for OpenBSD

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