See https://blueprints.launchpad.net/xbps/+spec/essential-upgrades
for complete information.
Implementation used almost the same code than the pseudo-code explained
in the blueprint. Works really fine, tested with glibc-2.10.1 -> 2.11
upgrade.
--HG--
extra : convert_revision : xtraeme%40gmail.com-20091109013004-szdc9ngb3i70bc4p
libfetch from NetBSD's pkgsrc has been imported into lib/fetch, but
the objects are embedded into libxbps. Only a public function to fetch
files has been implemented: xbps_fetch_file().
The library now is built with -fvisibility=hidden by default, and
exported symbols are the ones that use the SYMEXPORT macro.
The code works well enough, but will need many more cleanups.
--HG--
extra : convert_revision : xtraeme%40gmail.com-20091027004600-0lq9aao67lisbzxv
Simplify logic and fix the mistake of pass-by-value vs pass-by-ref.
--HG--
extra : convert_revision : xtraeme%40gmail.com-20090930162921-wfx9ze2v7rjrpmza
Move the set_pkg_state call just after the fsync call, otherwise
strange things can ocurr sometimes.
--HG--
extra : convert_revision : xtraeme%40gmail.com-20090818205029-b01fqdf5tw4hnzgc
