add precompiled header.
add QMAKE_PROJECT_NAME = libtiled
Merge pull request #681 from leeonix/master

add precompiled header.
[Flare Plugin] Fix coordinate format for import and export

Flare expects object coordinates to be in tiles instead of pixels.
Conversions have been added for Orthogonal and Isometric maps (the
2 that Flare supports).

The export function now writes the orientation of the map. This isn't
used by the Flare engine itself, but it is used when importing Flare
maps into Tiled.
Fixed Select All action to work for object layers

Now when an object layer is selected, it selects all objects on that
layer. Also it no longer does a tile selection when an image layer is
selected.

Closes #214
Split up 'Export' action from 'Export As...'

Now, the default Export action will re-export with the same file and
format used last time, without confirming the overwrite. When used for
the first time it will behave exactly like 'Export As...'.

Closes #189
Merge branch '0.10'
Show some feedback in the status bar on re-export

Without this you may not even be sure whether you hit the right key, so
this seems like the right thing to do.
Fixed enabled state of 'Export As' and 'Reload' actions

They were enabled even when no map was open.
Put a shortcut on the Reload action (Ctrl+R)

In some situations it doesn't work to rely on automatic reloading.

Closes #768
Updated Qbs project file
Regenerated Python bindings with PyBindGen 0.17.0

This undoes the changes in ba6394fef5c409b041ee79c997d7d5fd958f30ad,
which were apparently applied manually. Possibly something should be
added to tiledbinding.py to allow setting the rendering order.
Merge branch 'master' into wip/qtquick
Changed all the base libtiled classes to derive from QObject

The tricky thing here was that this makes a copy constructor impossible,
which was used by the Python plugin. I hope I made the right
adjustements there.

The point of this change is to allow these classes to be used from QML.
Fixed RPATH so that tiledquickplugin can find libtiled

Expose the first libtiled class 'ObjectGroup' to QML.