Eeschema: fix bug in algorithm which select net names, in netlist calculations. Named nets should now keep their names. Cvpcb:minor enhancements. Gerbview: fix an issue under W7.

Gerbview: remove useless calls to SetToolbar() which create horizontal toolbar flicker under Windows.

Gerbview: fix an issue with gerber files having a line comment starting by G04 and a command after this comment, on the same line.

Fix issue with new layer box, mainly with wxWidgets 2.9.1, minor code cleanup. Uncrustify class_layerchoicebox.cpp

Pcbnew: try to fix an old bug (when moving the Layer manager window) without recreate bug size MsgPanel

Cvpcb and Gerbview: move dialog files in dialogs/.
Eeschema: fix bug in libedit: crashes with import a symbol.

Fix bug in PolyLine.cpp, Fix bug in DRC calculations (see changelog). Cvpcb: move dialog files in dialogs/