Survex 1.1.6 development snapshot uploaded

[Olly Betts]

I've been busily coding away, so it's about time for another snapshot.
You can download 1.1.6 from:

http://www.survex.com/software/1.1.6/

Please note that this is a test build of the development version.
Things should mostly work, but you're a lot more likely to encounter
problems than with the stable 1.0.X versions.  I'd certainly not
recommend installing this as your only survex version and going on
expedition...

But please download it, try it out, and report any problems.  I'd also
appreciate success stories.

Changes in 1.1.6:

* (MS Windows version): Distribution is about a third smaller than 1.1.5
  (mostly because mingwm10.dll is no longer required).

* aven: If aven is asked to load a .svx, .dat, or .mak file, run cavern on
  it, showing cavern's output in a window (with errors and warnings clickable
  to load the offending file into an editor), and then loading the resulting
  3d file.

* aven: Added "Colour by Date" option.

* aven: Disable "Colour by Depth" option if there's no elevation variation.

* aven: Don't crash if trying to load a survey with no elevation variation.
  Instead turn off depth colouring.

* aven: Export as HPGL added.

* aven: Improved update of mouse coordinates and measuring line (thanks to
  Martin Green).

* aven: Show the coordinates of either the mouse pointer or the nearest
  survey station to it (if there is one near enough).  Showing both was
  confusing and meant the status bar overflowed on smaller displays.

* aven: When printing an extended elevation, don't show bearing and elevation.

* aven: Don't lock "flat" surveys which aren't extended elevations - a
  flat survey with LRUD data isn't flat any more!

* aven: When we have to draw blobs and crosses the slow way (because the
  graphics hardware doesn't support the fast way), draw them so that they
  should appear at the correct depth into the 3D scene instead of on top
  of everything else.

* aven: Make "play presentation backwards" icon green to match the other
  presentation icons.

* (MS Windows version): aven: Mouse clicks on the survey view now set the
  keyboard focus there.

* (MS Windows version): aven: Fix first redraw of a newly loaded survey.

* (MS Windows version): aven: Fix redrawing of measuring line.

* cavern: Store dates for img_XSECT.

* cavern: Fixed small one-off memory leak if you specify -o more than once.

* (Unix version): Check environmental variable LC_MESSAGES when deciding what
  language to use for messages.

* (MS Windows version): "Print" on a 3d file now prints through aven rather
  than the separate printer driver (Unix has done this for some time).

* Removed old printer drivers.

* img library: When creating a 3d file, ignore img_XSECT if we've been asked
  to write a file format version which doesn't support it.

Cheers,
    Olly