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/

Eeschema: converted plot PS dialog from Dialogblocks to wxFormBuilder Fixed a minor bug when plotting shapes with filled in background option. Pcbnew: Added locked modules block patch

Gerbview: support for plot lines (currently: not arcs) with a rectangular pen (Yes, it exists!). pcbnew: try to fix an issue when exporting arcs in gencad.

Libedit: fixed draw artefacts when editing a graphic symbol. fixed minor issues in undo and abort commands when editing graphic items.

Make option not uppercasing component names. I'm so bored with my Eeschema is convert ADuC, Si, component names to ADUC, SI etc., so I contribute this patch so anyone now may keep components

* Fix bug that prevented component from being replaced in library when
  the component root name was changed.
* Fix drawing bug when changing text or field item string while move in
  progress.
* Fix drawing bug when rotating text item while move in progress.
* Prevent undo or redo when editing a component draw item.
* Fix assert bug when replacing component in library when the component
  root name was changed.
* Fix bug in field editor caused by new root alias implementation that
  prevented any field from being changed.
* Fix minor spacing issues with EESchema find dialog.
* Deprecate remaining internal linked list code from component library
  objects.
* Rename pin object files to match new library object file naming
  scheme.
* Move LIB_TEXT object definition into it's own header file.

STRING_LINE_READER::ReadLine() has been broken for a few weeks, since changing the purpose of member 'source'