more fixes for temporary files

git-svn-id: http://processing.googlecode.com/svn/trunk@10820 fe3ceab9-de17-3b67-bb2e-7d58edd5e4d6
add TAU as alias for TWO_PI (issue #1488)

git-svn-id: http://processing.googlecode.com/svn/trunk@10821 fe3ceab9-de17-3b67-bb2e-7d58edd5e4d6