Merge pull request haskell#52 from Mistuke/trac-11100-expose-part-of-…

…create-pipe

Trac 11100 expose part of create pipe

Release 1.4.1.0

Process 1.4.0.0

Release 1.3.0.0

process 1.2.3.0

process 1.2.2.0

 * Fix delegated CTRL-C handling in `createProcess` in case of failed
   process creation. See issue haskell#15
   for more details.

 * `waitpid` on child PID after pre-exec failure in child to prevent zombies.
   See also issue haskell#14

process 1.2.1.0

 * Add support for `base-4.8.0.0`
 * Remove Hugs98 specific code
 * New `IsString CmdSpec` instance
 * Expose documentation for `System.Process.Internals`
 * With GHC 7.10, `System.Cmd` and `System.Process` are now `Safe`
   (when compiled with older GHC versions they are just `Trustworthy`)
 * Expose `createProcess_` function, and document behavior of `UseHandle` for
   `createProcess`. See [issue haskell#2](haskell#2).
 * New `System.Process.createPipe` operation.
   See also [GHC #8943](https://ghc.haskell.org/trac/ghc/ticket/8943)

process 1.2.0.0

 * Update to Cabal 1.10 format
 * Remove NHC specific code
 * Add support for `base-4.7.0.0`
 * Improve `showCommandForUser` to reduce redundant quoting
 * New functions `callProcess`, `callCommand`, `spawnProcess` and `spawnCommand`
 * Implement WCE handling according to http://www.cons.org/cracauer/sigint.html
 * New `delegate_ctlc` field in `CreateProcess` for WCE handling
 * Use `ExitFailure (-signum)` on Unix when a proc is terminated due to
   a signal.
 * Deprecate `module System.Cmd`
 * On non-Windows, the child thread now comunicates any errors back
   to the parent thread via pipes.
 * Fix deadlocks in `readProcess` and `readProcessWithExitCode`

Update version bound for directory