[build] fix building of p5regex components on non-windows. Re-include it in the default target
[build] fix building of p5regex components on non-windows. Re-include it in the default target

cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp