makepkg: Support for resuming source downloads

Download to *.part and remove the suffix if successful, thus md5sums will be
checked only for complete files, and next time makepkg will resume
downloading of partial file instead of complaining about invalid md5sums.

Old DLAGENTS format is still supported.

Late fix: Do not try to download %u first

The output of grep was not suppressed, thus the output of get_downloadcmd
was wrong because of extra line at the beginning that contained an
unsubstituted (with %o and %u) entry from DLAGENTS.

Signed-off-by: Roman Kyrylych <roman@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

0 files changed, 0 insertions, 0 deletions