blocking Redraw

git-svn-id: http://svn.code.sf.net/p/netgen-mesher/code/netgen@895 38e36fca-e102-11dd-b6c5-65a6809f2f0c
element index

git-svn-id: http://svn.code.sf.net/p/netgen-mesher/code/netgen@896 38e36fca-e102-11dd-b6c5-65a6809f2f0c
fix SetMaxH in python

git-svn-id: http://svn.code.sf.net/p/netgen-mesher/code/netgen@897 38e36fca-e102-11dd-b6c5-65a6809f2f0c
python-testout, warnings

git-svn-id: http://svn.code.sf.net/p/netgen-mesher/code/netgen@898 38e36fca-e102-11dd-b6c5-65a6809f2f0c