WIP: Moved sources int src/, separated most of the source code from Perl.

The XS was left only for the unit / integration tests, and it links
libslic3r only. No wxWidgets are allowed to be used from Perl starting
from now.

src/avrdude/BUILD-FROM-SVN

@@ -0,0 +1,13 @@
+$Id$
+
+How to build avrdude from SVN:
+
+1. svn co svn://svn.savannah.nongnu.org/avrdude/trunk
+
+2. cd trunk/avrdude
+
+3. ./bootstrap
+
+4. ./configure
+
+5. make