Fix test error in msvc-10.0

My previous PR(#7)'s test will occur compile error in msvc-10.0, since it doesn't support variadic templates.
Thus, entire test should be ignored if variadic templates isn't supported.

failed test: http://www.boost.org/development/tests/develop/developer/output/teeks99-02c-win2008-64on64-boost-bin-v2-libs-fusion-test-std_tuple-test-msvc-10-0-debug-threading-multi.html