move thirdparty program installation for standalone bundle into haskell program

This allows it to use Build.SysConfig to always install the programs
configure detected. Amoung other fixes, this ensures the right uuid
generator and checksum programs are installed.

I also cleaned up the handling of lsof's path; configure now checks for
it in PATH, but falls back to looking for it in sbin directories.

Build/TestConfig.hs

@@ -2,9 +2,14 @@
 
 module Build.TestConfig where
 
+import Utility.Path
+import Utility.Monad
+
 import System.IO
 import System.Cmd
 import System.Exit
+import System.FilePath
+import System.Directory
 
 type ConfigKey = String
 data ConfigValue =
@@ -98,6 +103,23 @@ searchCmd success failure cmdsparams = search cmdsparams
 			then success c
 			else search cs
 
+{- Finds a command, either in PATH or perhaps in a sbin directory not in
+ - PATH. If it's in PATH the config is set to just the command name,
+ - but if it's found outside PATH, the config is set to the full path to
+ - the command. -}
+findCmdPath :: ConfigKey -> String -> Test
+findCmdPath k command = do
+	ifM (inPath command)
+		( return $ Config k $ MaybeStringConfig $ Just command
+		, do
+			r <- getM find ["/usr/sbin", "/sbin", "/usr/local/sbin"]
+			return $ Config k $ MaybeStringConfig r
+		)
+  where
+	find d =
+		let f = d </> command
+		in ifM (doesFileExist f) ( return (Just f), return Nothing )
+
 quiet :: String -> String
 quiet s = s ++ " >/dev/null 2>&1"