Remove useless include.
Remove checking of unused headers and functions.

This speeds up the configure stage a little bit.
Restore help files to being part of the source distribution.

Ensure it works with make distcheck
Fix potential unnecessary exit in trying to handle spawning of external command.

Mostly only a problem on Windows if the gspawn-win32-helper.exe program is not available.
NB Currently we package it in the Windows installation.
Need more files for Windows packaging.

Put locale files in right place.
Add our text files and COPYING notices.
Setup to package GTK2.24.10
When creating via Wine - ensure production of items not known how on Windows:
. ChangeLog.txt
. Help PDF
. configure script

Need to use xsltproc to complete build cleanly.
Fix crash when cancelling an 'Acquire' in progress thread task.

Issue caused by SHA:b2aa700f11bb54b6f9c6a0f8cf95bf3caccf7df5 in supporting a non thread method
Need to free memory at the correct time and place.
Fix usage of GDateTime functionality which is only in GLIB 2.26 and newer.

Introduced in SHA:450d8665d01939454c094692b4843d5dfea2b3be
Fix crashing if creating a DEM layer with no files.

Ensure the layer is realized before accepting updates, as VIK_GTK_WINDOW_FROM_LAYER will fail.

In the DEM case: since there's no files, the thread exits and generates a layer update before the layer is realized.
So it's better not to bother with a thread if there's no files to use.
Fix copy and paste typo in a Windows script.
[DOC] Update map download tool text.

Include the map tile info dialog and show an example image.
[DOC] Add an example screenshot of Viking.

This is the currently first shown one on the SourceForge website.
Import Launchpad translation updates
Document previous translation updates
Releasing Viking 1.4.0
Windows: Add .vik file extension association option in the installer
Releasing 1.4.0.1

Signed-off-by: Rob Norris <rw_norris@hotmail.com>
Enable some layers to be created without needing a viewport.
[QA] Initialization of TrackWaypoint layer data in related part.

Isolate viewport related settings to one function.
[QA] Better usage of enumeration type to identify layers.
[QA] Enumerate and use VikLayerParamType