can someone explain the new layout of glibc tarballs?

[Robert P. J. Day]

  is there somewhere a good explanation of the contents of the
leading edge glibc and related snapshot tarballs?  here's what i've
downloaded:

-rw-r--r--  1 rpjday rpjday 15429830 Oct 27 21:10 glibc-20051024.tar.bz2
-rw-r--r--  1 rpjday rpjday 14541570 Oct 27 21:13 glibc-2.3-20051024.tar.bz2
-rw-r--r--  1 rpjday rpjday   151545 Oct 27 20:59 glibc-2.3-ports-20051024.tar.bz2
-rw-r--r--  1 rpjday rpjday   459553 Oct 27 21:00 glibc-ports-20051024.tar.bz2

so, ignoring the standard glibc-2.3.5 release, what's going on in the
above?  the two glibc snapshots are *almost* the same size.  the two
ports snapshots are significantly different in size.

how do the above relate to what you'd use to try to build a toolchain?
a pointer to a URL would suit me just fine.

rday

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