Fix pkg-config file
Update ChangeLog
Update INSTALL
Split config.mk in two parts

config.mk is for user's configuration
package.mk contains informations about the library
libexception 0.1
libexception 1.0

Add debian/ files

Build debian packages with:
  debuild -uc -us
Use autoconf to build a valid pkgconfig file
Use autoconf to build MakefileS too

+ add configure script to VCS
+ remove package.mk (libtool version and package name are defined in
  configure.ac
+ fix Version in pkgconfig file
Remove debian files
Improve configure.ac