Makefile

This is a Makefile system almost ready to work with puredata libdir format
This means, it is pretty convenient to build on all linux system and install to work with pd.

To build it run from git run : 

~~~~
$ ./autogen.sh
$ ./configure
$ make
$ sudo make install
~~~~

Known issues: the binary name "c.library" is not a "canonical" name (in the automake meaning) since it has a dot "." in it. This rises some troubles when building. I propose to rename the binary "cream" which (I think) better describes the library. But this should be discussed.
Also the `make` step produce (for now) a `c.library.$(EXTENTION)` BUT the `make install` rename it `cream.$(EXTENTION)` which lead to undefined symbol at loading. Renaming the binary to `c.library.$(EXTENTION)` is a workaround.

This pull request also fixes some issues with Vanilla and A_CANT methods (which rises lots of error in Pd console)