Add bootstrap script

Signed-off-by: Simon Marchi <simon.marchi@efficios.com>

Add .gitignore

Signed-off-by: Simon Marchi <simon.marchi@efficios.com>

Add build system, remove dependency on glib, add TAP library

This commit...

 * adds an automake-based system.
 * removes glib dependencies from the library code (i.e. not from the tests),
   replacing them with home-grown code.
 * sets up the tests to run using the TAP library [1].

[1] https://github.com/shlomif/libtap-prev

Signed-off-by: Simon Marchi <simon.marchi@efficios.com>

Initial commit

Copy source and tests from the babeltrace repository, commit:

    23256fd15c8ac7d1faaa3e37d0df2e225e90a6c6
    bt2: reverse order of printed causes in _Error.__str__

Signed-off-by: Simon Marchi <simon.marchi@efficios.com>