Changes to unix(3)

Changes to unix:
commit a6bc389df2b25cbf9340f54b123a08831350d3f0
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Fri Nov 8 12:54:22 2013 +0100

    Fix markup for function names in DEPRECATION messages

    This helps Haddock make tose hyperlinked functions.

    Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

commit 17192d89e642c463a1987fa3cc5cca2eb546bec7
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Fri Nov 8 12:48:54 2013 +0100

    Add `forkProcessWithUnmask` function

    This seemed to be an obvious addition while working on #8433.

    Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

commit 897d66ad9d77d17dae1b5ac94af792e671a76c13
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Fri Nov 8 12:42:56 2013 +0100

    Fix `forkProcess` to inherit caller's `MaskingState`

    ...and while at it, use `bracket` to fix a potential resource leak due
    to `freeStablePtr` not being called if `throwErrnoIfMinus1` throws an
    exception.

    This fixes #8433

    Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>