VFS file handling - using uniform.prc library from Mert Saglam

Add uniform.prc to distribution

Load a large file.  Delete a lot of text off the end, so that the last record or more are gone.  Exit.  Could be some bad or empty records left over.

After rename, prefpos0 should have new name. - Fixed.

On Handspring Visor ROM, have a small file open, then open The Crossing.  Warning about reading from unallocated chunk of memory.  Noticed that it happens internal to the FldDrawField, in an internal call by Handspring OS 3.1H2.  Later 4.2 OS does not seem to do it, even debug ROM.  Checked parameters to the call, looks ok.  Actual OS on a device does not seem to have an issue.  Conclusion: probably OS bug, ignore.

Open File Info, change state of backup box, click OK.  Fatal error about null string passed.  Root cause: if file name was not changed, was setting file name passed to DmSetDatabaseInfo() to NULL.  Later tried to copy that string to prefPos0.  Fixed by not copying the string if it has not changed.
