Sort out MSVC static_assert and __is_pod

Signed-off-by: Rick Taylor <rick@tropicalstormsoftware.com>
Squash some warnings from MSVC

Signed-off-by: Rick Taylor <rick@tropicalstormsoftware.com>
Remove unused argument to SetEntriesInAcl

Signed-off-by: Rick Taylor <rick@tropicalstormsoftware.com>