Added Bullet source directory into header search path for finding its debug draw interface class header file.

git-svn-id: http://urho3d.googlecode.com/svn/trunk@2427 3bd170d8-ddcf-f82c-f583-7a401ccf5608
Adjusted physics sample materials. Let the boxes fall a bit in the beginning.
Copy export header only if it has changed to prevent unnecessary engine rebuild.


git-svn-id: http://urho3d.googlecode.com/svn/trunk@2428 3bd170d8-ddcf-f82c-f583-7a401ccf5608
Scene node name consistency in the samples.


git-svn-id: http://urho3d.googlecode.com/svn/trunk@2429 3bd170d8-ddcf-f82c-f583-7a401ccf5608
Allow programmatic control of the mip reduction settings of Texture.
Fixed fonts loading incorrectly when texture quality is not at maximum.


git-svn-id: http://urho3d.googlecode.com/svn/trunk@2430 3bd170d8-ddcf-f82c-f583-7a401ccf5608
Added PhysicsStressTest sample.


git-svn-id: http://urho3d.googlecode.com/svn/trunk@2431 3bd170d8-ddcf-f82c-f583-7a401ccf5608
Make the mesh objects larger for more interesting collision response.

git-svn-id: http://urho3d.googlecode.com/svn/trunk@2432 3bd170d8-ddcf-f82c-f583-7a401ccf5608
Merge branch 'master' into development