ioc: combine registrars and detect QSRV1 #449

Job	Run time
Linux centos 7	4m 43s
Native Linux (WError)	5m 1s
Linux fedora latest	4m 36s
Native Linux (libc++ debug)	5m 25s
Native Linux (c++17)	5m 58s
Cross mingw64 DLL	9m 48s
Cross mingw64 static	10m 12s
RTEMS5	13m 44s
Native Linux with clang	7m 14s
Native Linux with libevent stable	5m 38s
Native Linux with 7.0.2	7m 47s
Native Linux with 3.15	4m 3s
Native Linux with 3.14	6m 8s
OSX	8m 37s
vs2019 DLL	10m 48s
vs2019 static	10m 3s
	1h 59m 45s

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