extra-careful checking where there are complicated PSEUDO_FLAVORS).
module, maybe it's time to copy/paste it into pear.port.mk. thus, move MASTER_SITES and EXTRACT_SUFX to a common place ok sthen@ robert@
This class allows you to: * check if an address is an IPv6 address * compress/uncompress IPv6 addresses * check for an IPv4 compatible ending in an IPv6 address * check the assigned address space of an IPv6 address * do netmask calculations