curl: upgraded package to upstream

Upgraded net-misc/curl to version 7.55.1 on amd64

Changes from upstream:
* EAPI 6 -> 5
* 'eapply' -> 'epatch'
* 'eapply_user' -> 'epatch_user'

BUG=b:68073719
TEST=emerge-$BOARD net-misc/curl

Change-Id: Iea3d8b34db353cd08f034cb38c0b8b585cef4b28
Reviewed-on: https://chromium-review.googlesource.com/734211
Commit-Ready: Aditya Kali <adityakali@google.com>
Tested-by: Aditya Kali <adityakali@google.com>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
(cherry picked from commit 1367c1e21a42ea4611043c1d377957cc66757125)
Reviewed-on: https://chromium-review.googlesource.com/736833
Commit-Queue: Aditya Kali <adityakali@google.com>
5 files changed