This changes the buildlink3.mk files to use an include guard for the
recursive include. The use of BUILDLINK_DEPTH, BUILDLINK_DEPENDS,
BUILDLINK_PACKAGES and BUILDLINK_ORDER is handled by a single new
variable BUILDLINK_TREE. Each buildlink3.mk file adds a pair of
enter/exit marker, which can be used to reconstruct the tree and
to determine first level includes. Avoiding := for large variables
(BUILDLINK_ORDER) speeds up parse time as += has linear complexity.
The include guard reduces system time by avoiding reading files over and
over again. For complex packages this reduces both %user and %sys time to
half of the former time.
This package contains a public list of all known IDs used in PCI devices;
that is ID's of vendors, devices, subsystems and device classes. These ID
lists (usually in form of a pci.ids file) are used in various programs (The
Linux Kernel, The PCI Utilities, new version of the XFree86 etc.) to display
full device names instead of the numeric IDs.
Package provided by Mark Kirby in private email with some changes by me.
