Survex 0.97 prerelease 5 available

[Olly Betts]

I've uploaded the fifth prerelease of Survex 0.97.  Download links are on:

http://www.survex.com/

This prerelease is available for all platforms (apart from RISC OS and
pre-386 MSDOS machines - I'll do these shortly).

The major change in this version is that Mark has updated the Windows
version of aven.

We're close to 0.97 now - all that's left to do is:

* Fix Brian's caverot bug.

* Check controls have the same sense in caverot, xcaverot, aven, and the
  printer drivers.

* Sort out reports in .err file for closures involving stations fixed with
  error estimates.

* Add cadgen to documentation.

* Improve MS Windows file associations - e.g. don't close cavern window after
  processing a .svx file; add association for cadgen.

* If Wookey is back before everything else is done, merge in his changes to
  make xcaverot more usable on the ipaq (palmtop which can run Linux and has
  a small screen compared to a typical X display).

Full list of user-visible changes between 0.97-prerelease4 and prerelease5:

* survex: conversion wrapper now only creates __svxtmp.svx file if it
  has to - simple cases (such as "survex example.svx") don't need one;
  also always print warning that user should be using cavern instead.

* Minor updates to documentation.

* Survey stations names are no longer displayed with a leading '\' -
  this doesn't make sense now that root is deprecated, and didn't make
  much sense before to be honest.

* cavern: *fix with two standard deviations (horizontal and vertical)
  was being rejected - fixed.

* cavern: Fixed bug with station "\" appearing in the .err file for
  a station fixed with error estimates.

* (non-Unix versions): remove path and extension and lower-case program
  name for use in error reporting.

* (MS Windows version): added documentation overview page to HTML
  help.

* Removed 255 character limit on station names in .3d and .3dx files.

* caverot: overlapping label code wasn't allowing enough for vertical
  overlap.

* cavern: after a bad *data command, ignore survey data until the next
  valid *data command.

* printdm/printpcl: exit cleanly if bitmap font file is missing.

* cavern: give a more helpful error on empty "*export" or "*prefix".

* xcaverot: Fixed display of surface legs and related minor issues.

* print*: Fixed handling of surface legs; `-S' now recognised as a
  short-form for `--surface'.

* Added test of *solve command.

* cavern: Added commands *date, *team, *instrument, *copyright -
  currently these are ignored, but they provide a place to put data
  when importing/exporting, and will be processed in future versions.

* (MS Windows version): aven updated to same codebase as Unix version.

Cheers,
Olly