clean up, working out impl details for get_attributes api changes
Merge branch 'gui' of github.com:swryan/OpenMDAO-Framework into gui

FIXED Conflicts:
	openmdao.main/src/openmdao/main/container.py
Merge branch 'bug' into gui
disable highlighting of GUI file tree on update (via a preference setting)
Merge branch 'dev' into gui

FIXED Conflicts:
	openmdao.main/src/openmdao/main/component.py
Merge branch 'dev' into gui
vartree fix
tweaking vartree test
disable draw2d's default delete key handling, bug fix
more tweaks to VariableTree stuff
Merge branch 'dev' of github.com:OpenMDAO/OpenMDAO-Framework into vtree
Merge pull request #1378 from swryan/gui

gui - disable DELETE key in dataflow diagram
Merge branch 'dev' of github.com:OpenMDAO/OpenMDAO-Framework into vtree
Edited geometry tutorial again.
Support installing in a virtualenv, fix mingw install check.
Merge pull request #1379 from pziegfeld/redo_geom_edits

Edited geometry tutorial (redo plus additional text from JG).
removed a temporary 'pass' statement
Let users delete multiple files from the file tree
Merge branch 'dev' of github.com:OpenMDAO/OpenMDAO-Framework into dev
Windows fix for installing in activated virtualenv.