in page error writing log file

There's a possibility of an in-page-error (c0000006 exception) when writing or 
reading the TSVN log file.
Since in-page-errors happen only if the underlying network connection is cut 
off while accessing the file, there's not much we can do to avoid this. The 
real problem is the flaky network.

But: instead of storing the log file in the roaming folder, we should instead 
store the log file in the local folder. That reduces the chance that it's 
located on a network share but is stored really locally.

https://www.crash-server.com/Problem.aspx?ClientID=tsvn&ProblemID=60581

Original issue reported on code.google.com by tortoisesvn on 13 Mar 2014 at 6:21

jigs5460 / tortoisesvn

in page error writing log file #624