[Koha] Import of .KOC file into Koha 17.11 hangs

[Mark Alexander]

Excerpts from Chris Brown's message of 2017-12-27 17:03:17 +0000:
> Using a fresh install of Koha 17.11.00 (from Debian packages) I have
> successfully loaded our patron data, our catalog and our items. However
> when I try to import an offline circulation (.koc) file, nothing happens.
> The progress bar sits at 0% and nothing is imported.

I just tried this with a six-entry .koc file on a test installation of
17.11.00 in a VM and it seemed to work.  The progress bar did stay at
0% for a lengthy period, maybe 15 seconds, which was a little
alarming.  During that time, the VM seemed quite CPU-bound and I
couldn't ssh into it; this might be due to the fact that the VM had
only 1 GB of RAM.  But eventually it did complete and reported that
"your data was processed" along with a list of the processed items.

Here's what my test file looked like, in case that might help.  Note
that there are tabs separating the fields, not spaces.  Note also that
this file was generated by a script I wrote to convert a Mandarin loan
report to .koc, hence the funny looking timestamps.

Version=1.0	Generator=pdf2koc.rb	GeneratorVersion=0.1
2017-08-05 12:30:00 0	issue	R7306	RPL24055
2015-07-09 12:30:00 1	issue	R1786	RPL26855
2017-07-25 12:30:00 2	issue	R1786	RPL22690
2017-08-01 12:30:00 3	issue	R1786	RPL24021
2017-08-01 12:30:00 4	issue	R1786	RPL23969
2017-08-01 12:30:00 5	issue	R1786	RPL28030