Reference msvc-generate from compat to assure correct build order

Reference msvc-generate from compat to assure correct build order

Single-process builds start building compat project first and they fail,
since the referenced config-msvc-version.h is not available yet. Multi-
process rebuilds also tends to fail if the compat project is built
faster than msvc-generate is able to produce the required output files.

Adding a reference to msvc-generate project assures correct build order.
Acked-by: Lev Stipakov <lstipakov@gmail.com>
Message-Id: <20181008100323.11308-1-simon@rozman.si>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg17635.html

Signed-off-by: Gert Doering <gert@greenie.muc.de>