test_enqueue_task
Merge pull request #55 from yuyichao/pull.test_enqueue_task

test_enqueue_task
Minor fixes to test_enqueue_task
Re-fix fp64 warning avoidance
sync gitignore with cffi
Platform._get_cl_version
test_platform_get_devices
test user event
test_get_host_array
disable get_host_array for MemoryObject without USE_HOST_PTR since the returned array may not be valid
more test for MemoryObject.get_host_array
typo ... I meant ALLOC_HOST_PTR....
only catch expected error in get_host_array() (and not buffer creation)
test_enqueue_task
change submodule address