Improve handling when compute initial coordinate

[ccrook]

The following error message occurs when the PCF fails to compute a coordinate for the user station. It is not too bad! But it would be better if this could be picked up in the PCF at the point at which it fails (CODSPP, step 070) rather than in GETDATA. In this case it fails because the user submitted a GLONASS only file (to test if PositioNZ-PP would handle it - could have read the documentation!)

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From: bern_server@linz.govt.nz [bern_server@linz.govt.nz]
Sent: 01 April 2017 22:51
To: Chris Crook; Dionne Hansen
Subject: PositioNZ-PP job failure: prdasspnz01 P862DX_0

Bernese processing job failed

Job id : P862DX_0
User email : a_user@somewhere
Start time : 1491040262
End time : 1491040270
Fail PID : 080
Fail script : GETDATA
Fail message : Automatic selection reference station MQZ1 is not defined in the coordinate file

  User filename: MZQG_GLO
  Session start: 2013-01-01 00:00:00
  Duration     : 86370
  Receiver type: TRIMBLE NETR9
   Antenna type: TRM57971.00     NONE

User Receiver type: TRM57971.00 NONE
User Antenna type: TRIMBLE NETR9
Antenna height: 0.055