change to A_NULL to avoid error in Pd's console when clicking

This is a Puredata bug I think
if we want to send a "bang" from the patch, then the method shouldn't be A_CANT
first commit of Makefile system

TODO : add help files, generate c.library-meta.pd, install target
change version number and clean up

Signed-off-by: Antoine Villeret <antoine.villeret@gmail.com>
autogenerate meta file
remove duplicate
update automake system

add help files and misc

caveat : c.library is a non canonical and causes some trouble when installing
ignore automake generated files
change library binary name to cream.$(EXTENSION)
update library name
keep files in subfolders and add subfolder to search path
remove unneeded rules
fix click error on Vanilla 0-46
add "helps" subfolder to search path
fix error in Vanilla 0.46 when double click
set min size to 1. instead of 5.
add missing LICENSE.txt
add missing folders for ./autogen.sh
point to the right branch fix_0.46+_compat
Merge branch 'Makefile' of github.com:avilleret/CreamLibrary into Makefile