compat: import bitwise operations before use.
compat: import bitwise operations before use.

* lib/posix/compat.lua: Import bitwise operations before use.

Signed-off-by: Gary V. Vaughan <f9023000f29773649f3850298becb9544b5fd6a9@gnu.org>

rrthomas/luaposix,luaposix/luaposix,snegovick/luaposix,rrthomas/luaposix,jimmyharris/luaposix,snegovick/luaposix,ardje/luaposix,ardje/luaposix,jimmyharris/luaposix,zevv/luaposix,zevv/luaposix