configure.ac: update the version to 0.4.4.
-rw-r--r-- 105745 Doxyfile
-rw-r--r-- 128 Makefile.am
-rw-r--r-- 2133 configure.ac
drwxr-xr-x - doc
drwxr-xr-x - m4
-rwxr-xr-x 20753 run-tests.sh
drwxr-xr-x - src