release 5.1.5
release 5.1.5

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