QSRV: DBR meta-data mapping is incomplete.

[mdavidsaver]

The mappings defined in pdbApp/pvif.cpp don't handle some pieces of meta-data

• precision
• alarm levels

[mdavidsaver]

@shroffk fyi

[mdavidsaver]

Mostly address with c79f3624bdfbc0b71fdebb5396549f1ac6d3a2e6 which adds mapping for

• display.description
• display.format
• valueAlarm.highWarningLimit
• valueAlarm.lowWarningLimit
• valueAlarm.highAlarmLimit
• valueAlarm.lowAlarmLimit

This does not map the rest of the valueAlarm struct, which imo should be ignored/removed. In particular 'valueAlarm.active' which seems redundant.

Also, mapping of 'display.format' is disabled by default until I get some feedback from clients (at least cs-studio) on how useful these strings are. The strings are printf style formatters like: '%d' '%3u' '%16llu' or '%16s'.

[mdavidsaver]

19 will address the situation wrt. display.format.