Remove posix deps on two tests, pointed out by <shelarcy@capella.freemail.ne.jp>

examples/makewith/io/TestIO.conf

@@ -5,10 +5,7 @@
 --
 
 import System.IO
-import System.Posix.Types   ( ProcessID, Fd )
+import System.Process
-import System.Posix.Process ( forkProcess, executeFile, getProcessID )
-import System.Posix.IO      ( createPipe, stdInput, 
-                              stdOutput, fdToHandle, closeFd, dupTo )
 
 resource = testio { field = date }
 
@@ -16,61 +13,5 @@ resource = testio { field = date }
 -- call a shell command , returning it's output
 --
 date :: IO String
-date = do (hdl,_,_) <- catch (popen "/bin/date") (\_->error "popen failed")
+date = do (_,out,_,_) <- catch (runInteractiveCommand "/bin/date") (\_->error "popen failed")
-          hGetLine hdl 
+          hGetLine out
-
-------------------------------------------------------------------------
---
--- my implementation of $val = `cmd`; (if this was perl)
---
--- provide similar functionality to popen(3), 
--- along with bidirectional ipc via pipes
--- return's the pid of the child process
---
--- there are two different forkProcess functions. the pre-620 was a
--- unix-fork style function, and the modern function has semantics more
--- like the Awkward-Squad paper. We provide implementations of popen
--- using both versions, depending on which GHC the user wants to try.
--- 
-
-popen :: FilePath -> IO (Handle, Handle, ProcessID)
-popen cmd = do
-        (pr, pw) <- createPipe
-        (cr, cw) <- createPipe    
-
-        -- parent --
-        let parent = do closeFd cw
-                        closeFd pr
-        -- child --
-        let child  = do closeFd pw
-                        closeFd cr 
-                        exec cmd (pr,cw)
-                        error "exec cmd failed!" -- typing only
-
--- if the parser front end understood cpp, this would work
--- #if __GLASGOW_HASKELL__ >= 601
-        pid <- forkProcess child -- fork child
-        parent                   -- and run parent code
--- #else
---          p   <- forkProcess
---          pid <- case p of
---                  Just pid -> parent >> return pid
---                  Nothing  -> child
--- #endif
-
-        hcr <- fdToHandle cr
-        hpw <- fdToHandle pw
-
-        return (hcr,hpw,pid)
-
---
--- execve cmd in the child process, dup'ing the file descriptors passed
--- as arguments to become the child's stdin and stdout.
---
-exec :: FilePath -> (Fd,Fd) -> IO ()
-exec cmd (pr,cw) = do
-        dupTo pr stdInput
-        dupTo cw stdOutput
-        executeFile cmd False [] Nothing
-
-------------------------------------------------------------------------

examples/makewith/unsafeio/Unsafe.conf

@@ -1,4 +1,4 @@
-{-# GLOBALOPTIONS -package posix #-}
+{-# GLOBALOPTIONS -package mtl #-}
 -- illustrates the use of static options in pragmas
 
 import System.IO.Unsafe