Fix signal handling so all signals are handled, one at a time.
Fix signal handling so all signals are handled, one at a time.

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