* configure.ac: Define the components of the version number as
autoconf variables. Set the version number to 0.1.0
* abigail.m4: New file
* Makefile.am: Add abigail.m4 to the build system. Install it in
$(datadir)/aclocal.
* src/Makefile.am: Generate and add abg-version.h from the version
number autoconf variable defined in configure.ac. Re-generate
abg-version.h each time configure.ac changes.
* src/abg-config.h (abigail_get_library_version): Declare ...
* src/abg-config.cc (abigail_get_library_version): ... and define
this wirth C linkage. This is useful for autoconf tests to test
for the presence of the library.
* configure: Re-generate.
* Makefile.in: Likewise.
* src/Makefile.in: Likewise.
* tests/Makefile.in: Likewise.
* Makefile.am: Support the doc sub-directory. We don't have a
COPYRIGHT file.
* src/Makefile.am: Don't prefix the file paths by the absolute
path of the src dir; current autotools know how to deal with it,
otherwise and it break them.
* tests/Makefile.am: Likewise. Make sure to remove the output of
the tests upon make clean.
* Makefile.in: Re-generate.
* aclocal.m4: Likewise.
* configure: Likewise.
* src/Makefile.in: Likewise.
* tests/Makefile.in: Likewise.
