Fix Picture rotation.

Now picture rotates from center and in the correct direction.
Autotools: Fix library linking configuration and remove forced --no-as-needed (#77)
Don't use XP/VX dynamic sprite size for CharSet (fixes #137)
Don't take screenshot on every warning or error.
Remove unused lines.
Removed Dingux legacy makefile. Added opendingux (Dingoo & GCW-Zero) makefile.
C2011 flag added
Add config.h generated from GNU Autotools. Fixes ./configure
Autotools: Fix readers library path without setting --with-readers prefix #77
First scratch of scene_debug..h/cpp
Second approach to SceneDebug.

First scratch of window_varlist.h/cpp
Add a call.
known issue: crashes when load scene_debug.
Add information to the windows.

Now variable values are readable (still not editable)
Hide Selection rect on Window_VarList when window is unactive.
Implement Switch edition.
Minor fixes

Delete unused variable.
Add missing chars to variable name rendering.
Implement Window_IntegerEditor.

Also Fix minimal bug.
Nicer approach to RM's behavior

Now LEFT and RIGHT buttons change range pages.
Add checks to prevent pointing to a wrong Switch/Variable.
EXTRA: OFF Switches and negative int variables have a different color.

Apply numberimput patch by Ghabry
Missing implementation: display variable names.
Update Makefile.am

Add scene_debug.cpp and window_varlist.cpp