Some updates, first MPI functions added

autogen.sh

configure.ac

examples/Makefile.am

examples/test.c

examples/test_bh.c

examples/test_bh_sorted.c

examples/test_fmm_sorted.c

src/Makefile.am

src/error.h

src/qsched.c

src/qsched.h

src/queue.c

src/res.h

src/task.h