add a note to the build versions, to indicate purpose and be grep-able to allow for easier source packaging

useful for creating a config.h via an extraction script that creates a source tar bundle

subtle bug solved: no response to the first left click command after opening a dialog box (after an item edition, for instance)

pcbnew: Excellon files use only ascii codes in comments (some excellon parsers do not like I18n)

Modified recent change on svn change: "PCB edge always printed when PCB edge layer not selected" was incorrect for eeschema and gerbview
solved bug 2070228

It is resolved by adding 'Exclude Edges_Pcb layer' check box in 'Print' dialog.

bug solved: netlist calculations could crash eeschema under very rare circumstances. See also changelog

Libs update