adding tutorial network, refs #2

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@14495 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
preparing 0.18.0, refs #563

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@14496 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
building schemata only for available executables, refs #2

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@14497 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
configuration schemata, refs #2

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@14498 29f149b2-0c63-11e1-8f5c-a347f6a9acd0