tests: fix the timeout.py script and move it to a more central place

A string->float conversion for the command line argument was missing

Author: eeckstein

test/stdlib/timeout.py renamed to test/Inputs/timeout.py

@@ -16,4 +16,4 @@ def watchdog(command, timeout=None):
 
 
 if __name__ == '__main__':
-    watchdog(sys.argv[2:], timeout=sys.argv[1])
+    watchdog(sys.argv[2:], timeout=float(sys.argv[1]))

test/stdlib/Reflection.swift

@@ -1,7 +1,7 @@
 // RUN: %empty-directory(%t)
 // RUN: %target-build-swift -parse-stdlib %s -module-name Reflection -o %t/a.out
 // RUN: %target-codesign %t/a.out
-// RUN: %{python} %S/timeout.py 360 %target-run %t/a.out | %FileCheck %s
+// RUN: %{python} %S/../Inputs/timeout.py 360 %target-run %t/a.out | %FileCheck %s
 // REQUIRES: executable_test
 // FIXME: timeout wrapper is necessary because the ASan test runs for hours
 

test/stdlib/Reflection_objc.swift

@@ -3,7 +3,7 @@
 // RUN: %target-clang %S/Inputs/Mirror/Mirror.mm -c -o %t/Mirror.mm.o -g
 // RUN: %target-build-swift -parse-stdlib %s -module-name Reflection -I %S/Inputs/Mirror/ -Xlinker %t/Mirror.mm.o -o %t/a.out
 // RUN: %target-codesign %t/a.out
-// RUN: %{python} %S/timeout.py 360 %target-run %t/a.out %S/Inputs/shuffle.jpg | %FileCheck %s
+// RUN: %{python} %S/../Inputs/timeout.py 360 %target-run %t/a.out %S/Inputs/shuffle.jpg | %FileCheck %s
 // FIXME: timeout wrapper is necessary because the ASan test runs for hours
 
 // REQUIRES: executable_test