fixup! WIP: libevent testing #261

Job	Run time
Linux centos 7	5m 5s
Linux fedora latest	5m 35s
Native Linux (WError)	7m 9s
Native Linux (libc++ debug)	6m 42s
Native Linux (c++17)	5m 43s
Cross mingw64 DLL	15m 49s
Cross mingw64 static	15m 26s
RTEMS5	16m 36s
Native Linux with clang	7m 14s
Native Linux with libevent stable	6m 22s
Native Linux with 7.0.2	6m 19s
Native Linux with 3.15	5m 11s
Native Linux with 3.14	7m 38s
OSX	9m 15s
vs2019 DLL	10m 7s
vs2019 static	10m 22s
	2h 20m 33s

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