Survex 1.0.38 released

[Olly Betts]

I've backported a number of bug fixes and minor enhancements from 1.1.7 to
produce a new stable 1.0 version.  For the enhancements, I've only considered
the simpler and more self-contained changes, so this update should be painless.
But if you do spot any problems, let me know promptly!

Download from the usual place:

http://www.survex.com/download.html

Changes in 1.0.38 (all backported from 1.1.7):

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

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

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

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

* aven: Added Aven's icon to the "About" dialog.

* aven: Use localised character for the decimal point (e.g. "," in most
  continental European countries).

* aven: Previously the survey tree would get focus and then take keypresses
  (e.g. "P", "L", "Delete").  Now we pass most keypresses across so they
  operate on the cave, and transfer the input focus across when we do.

* aven: Make pressing "Return" in the tree control expand/collapse a subtree.

* aven: Make entrances green in side panel tree list to match green blobs used
  in cave view.

* aven: Reworded "Restore Default Settings" as "Restore Default View".

* (Unix version): aven: Set sensible default margins for printing and preserve
  any margin values the user specifies between runs (previously margins
  defaulted to 0 each time aven was run).

* (Unix version): aven: Really stop setting extra toolbar margin when using
  GTK2.0.  The attempt to fix this backported in 1.0.36 failed because
  __WXGTK12__ is set for GTK+ 1.2 or *any later release* so it is true for
  GTK+ 2.0 too!

* (Unix version): aven: Add details of which of wxGTK, wxMotif, and wxX11
  we've been compiled with, and which GTK+/Motif version where appropriate.

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

* extend: Fixed 2 uninitialised flags (should fix erratic behaviour on
  with MS Windows).

* extend: Default output name for a file called input.3d is now input_extend.3d
  rather than just extend.3d (which was annoying if you wanted to extend
  several surveys in the same directory).

* cavern: Applied Simeon Warner's patch for handling backcompass, backclino,
  and omitted forward compass/clino readings in Compass DAT files.  Added
  a feature test for this to the testsuite.

* cavern: Fix handling of a *solve followed by survey data, none of which is
  attached to the previous data.

* cavern: Fixed "No survey data" error when a *solve is followed by another
  *solve (or the implicit solve at the end of processing) with no data between
  them.

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

Cheers,
    Olly