openssl-1.0.2j: OpenSSL 1.0.2j

The MSYS2 OpenSSL packages included in Git for Windows v2.10.1 were
built from this revision.

openssh-7.3p1: Git for Windows' OpenSSH 7.3p1

Git for Windows v2.9.3(2) was shipped with an updated OpenSSH, built from
this here revision.

Signed-off-by: Johannes Schindelin <[email protected]>

openssl-1.0.2h: OpenSSL upgrade to version 1.0.2h

It was announced a couple of days ago that this version would be released
today, with critical updates.