Some people like curved lines, other hate them. This commit will let the user change the level of curving.
In UserPreferences=>Themes=>Node editor=>Noodle curving the level can be modified. Allowed range is 0-10 with the default on 5
The patch will default everything to the way blender works ATM.
File subversion has been increased otherwise older 258 files got straight lines.
The data is stored in the ThemeSpace.noodle_curving
the bezierdrawing is done in the drawnode. Also tested the Line cut tool
9da70f74d3