Added mingw32-specific expected stdout files for tests/driver/sigof{01,02,03}

Reviewers: austin

Reviewed By: austin

Subscribers: thomie, carter, simonmar

Differential Revision: https://phabricator.haskell.org/D398

testsuite/tests/driver/sigof01/sigof01m.stdout-mingw32

+[1 of 3] Compiling A                ( A.hs, tmp_sigof01m\A.o )
+[2 of 3] Compiling B[sig of A]      ( B.hsig, nothing )
+[3 of 3] Compiling Main             ( Main.hs, tmp_sigof01m\Main.o )
+Linking tmp_sigof01m/Main.exe ...
+False
+T
+True

testsuite/tests/driver/sigof02/sigof02dm.stdout-mingw32

+[1 of 3] Compiling MapAsSet[sig of Data.Map.Lazy] ( MapAsSet.hsig, nothing )
+[2 of 3] Compiling Map[sig of Data.Map.Lazy] ( Map.hsig, nothing )
+[3 of 3] Compiling Main             ( Double.hs, tmp_sigof02dm\Main.o )
+Linking tmp_sigof02dm/Double.exe ...
+False
+fromList [0,6]
+[(0,"foo"),(6,"foo")]
+fromList [(0,"foo"),(6,"foo")]

testsuite/tests/driver/sigof02/sigof02m.stdout-mingw32

+[1 of 2] Compiling Map[sig of Data.Map.Strict] ( Map.hsig, nothing )
+[2 of 2] Compiling Main             ( Main.hs, tmp_sigof02m\Main.o )
+Linking tmp_sigof02m/StrictMain.exe ...
+[1 of 2] Compiling Map[sig of Data.Map.Lazy] ( Map.hsig, nothing ) [sig-of changed]
+[2 of 2] Compiling Main             ( Main.hs, tmp_sigof02m\Main.o ) [Map changed]
+Linking tmp_sigof02m/LazyMain.exe ...
+False
+[(0,"foo"),(6,"foo")]
+fromList [(0,"foo"),(6,"foo")]