revert Joseph Eagar's eltopo commits r36073, 36075 (& some minor edits)

discussed with Janne, Ton, Nathan and we agreed this kind of change at least needs discussion with module owners.

Its also too close to release to be making these kinds of changes.

commands used:

  # reverse merge
  svn merge -r36073:36072 .
  # for some reason this gave a lot of property changes
  svn revert `svn st | grep "^ M" | awk '{print $2}'`
  # reverse merging didn't work here, removing while dir.
  svn rm extern/eltopo/


  # manually fixed conflict in
  # ./source/blenderplayer/CMakeLists.txt
  #
  # also manually removed 2 lines from
  # ./CMakeLists.txt

build_files/scons/tools/btools.py

@@ -99,7 +99,7 @@ def validate_arguments(args, bc):
             'WITH_BF_INTERNATIONAL',
             'BF_GETTEXT', 'BF_GETTEXT_INC', 'BF_GETTEXT_LIB', 'WITH_BF_GETTEXT_STATIC', 'BF_GETTEXT_LIB_STATIC', 'BF_GETTEXT_LIBPATH',
             'WITH_BF_ICONV', 'BF_ICONV', 'BF_ICONV_INC', 'BF_ICONV_LIB', 'BF_ICONV_LIBPATH',
-            'WITH_BF_GAMEENGINE', 'WITH_BF_BULLET', 'WITH_BF_ELTOPO', 'BF_BULLET', 'BF_BULLET_INC', 'BF_BULLET_LIB',
+            'WITH_BF_GAMEENGINE', 'WITH_BF_BULLET', 'BF_BULLET', 'BF_BULLET_INC', 'BF_BULLET_LIB',
             'BF_WINTAB', 'BF_WINTAB_INC',
             'WITH_BF_FREETYPE', 'BF_FREETYPE', 'BF_FREETYPE_INC', 'BF_FREETYPE_LIB', 'BF_FREETYPE_LIBPATH', 'BF_FREETYPE_LIB_STATIC', 'WITH_BF_FREETYPE_STATIC',
             'WITH_BF_QUICKTIME', 'BF_QUICKTIME', 'BF_QUICKTIME_INC', 'BF_QUICKTIME_LIB', 'BF_QUICKTIME_LIBPATH',
@@ -365,8 +365,6 @@ def read_opts(env, cfg, args):
         (BoolVariable('WITH_BF_GAMEENGINE', 'Build with gameengine' , False)),
 
         (BoolVariable('WITH_BF_BULLET', 'Use Bullet if true', True)),
-        (BoolVariable('WITH_BF_ELTOPO', 'Use Eltopo collision library if true', False)),
-        
         ('BF_BULLET', 'Bullet base dir', ''),
         ('BF_BULLET_INC', 'Bullet include path', ''),
         ('BF_BULLET_LIB', 'Bullet library', ''),