Fix drdr props for more files.

Fix requires in TS tests.

svn: r16635

original commit: f29e01029c1462147382c1ea3280107ea9b89a41

collects/tests/typed-scheme/unit-tests/contract-tests.ss

@@ -6,7 +6,7 @@
          (private type-contract)	 
 	 (rep type-rep filter-rep object-rep)
          (types utils union convenience)
-         (utils tc-utils mutated-vars)
+         (utils tc-utils)
          (schemeunit))
 
 (define-syntax-rule (t e)

collects/tests/typed-scheme/unit-tests/typecheck-tests.ss

@@ -9,7 +9,8 @@
          (rename-in (types utils union convenience)
                     [Un t:Un]
                     [-> t:->])
-         (utils tc-utils mutated-vars)
+         (utils tc-utils)
+         unstable/mutated-vars
          (env type-name-env type-environments init-envs)
          (schemeunit)
          syntax/parse)