2.50: svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r18677:19317

Notes:
* Sequence transform strip uses G.scene global, this is commented
  out now, should be fixed.
* Etch-a-ton code was most difficult to merge. The files already in
  2.5 got merged, but no new files were added. Calls to these files
  are commented out with "XXX etch-a-ton". editarmature.c and
  transform_snap.c were complex to merge. Martin, please check?
* Game engine compiles and links again here for scons/make/cmake
  (player still fails to link).

source/gameengine/Expressions/SConscript

@@ -6,4 +6,9 @@ sources = env.Glob('*.cpp')
 incs ='. #source/kernel/gen_system #intern/string #intern/moto/include'
 incs += ' ' + env['BF_PYTHON_INC']
 
-env.BlenderLib ( 'bf_expressions', sources, Split(incs), [], libtype=['core','player'], priority = [310,120] )
+cxxflags = []
+if env['OURPLATFORM']=='win32-vc':
+	cxxflags.append ('/GR')
+	cxxflags.append ('/O2')
+
+env.BlenderLib ( 'bf_expressions', sources, Split(incs), [], libtype=['core','player'], priority = [360,120], cxx_compileflags=cxxflags)