DBE_ARCHIVE not handled correctly

[mdavidsaver]

QSRV2 tries to handle record._options.DBE from a pvRequest to compute the DBE mask passed through to dbEvent. However, currently DBE_ARCHVIE is being lost since the Everything mask does not in fact contain every mask. So subscribing with record[DBE=ARCHIVE] will only see property events (since DBE_PROPERTY is handled specially).

pvxs/ioc/iocsource.h

Line 40 in ff1d651

Everything = DBE_VALUE | DBE_ALARM | DBE_PROPERTY, // GET

pvxs/ioc/singlesource.cpp

Line 82 in ff1d651

change = UpdateType::type(pDbFieldLog->mask & UpdateType::Everything);