R4-6 and earlier:
array PV's whose representation in a .sav file is exactly
119 characters long result in the PV being handled twice, the second time as
a scalar with no data.  For an array of char, this has had the effect of setting
the first element to zero.

R4-1:
.sav files must have a header line.  Too sensitive to errors reported in
errno.  Status PV's restricted to PV_NAME_LEN chars.  Blank but not empty 
lines cause problems.

R4-0:
Not too smart about array PV's changing number of elements.  <P>Kills itself
if it can't find its status PV's.

R3-5:
Note that this 3.13-compatible software is not in the form of a module.