Travis: call test program directly rather than by cabal.

.travis.yml

@@ -35,5 +35,8 @@ script:
    fi
  - cabal-$CABALVER configure --enable-tests -v2  # -v2 provides useful information for debugging
  - cabal-$CABALVER build $JOPTS --ghc-options=$GHCOPTS # this builds all libraries and executables (including tests/benchmarks)
- - cabal-$CABALVER test
+# Since we're having problems with "cabal version changed" on ghc 7.10
+# on travis, let's temporarily just call the test program directly:
+# - cabal-$CABALVER test
+ - dist/build/test-pandoc/test-pandoc
  - cabal-$CABALVER check