svn path=/main/trunk/; revision=15411
* "world" now includes separate "selected" and "system" sets, where the
"selected" set includes packages listed in /var/lib/portage/world and nested
sets that may be listed /var/lib/portage/world_sets.
+* The new --rebuilt-binaries option will replace installed packages with binary
+ packages that have been rebuilt. Rebuilds are detected by comparison of
+ BUILD_TIME package metadata. This option is enabled automatically when using
+ binary packages (--usepkg or --getbinpkg) together with --update and --deep.
portage-2.1.7
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