Merge branch 'master' into particle-caching

configure.ac

examples/Makefile.am

examples/main.c

src/Makefile.am

src/dump.c

src/dump.h

src/engine.c

src/hydro/Minimal/hydro.h

src/partition.c

src/profiler.c

src/profiler.h

src/runner_doiact.h

src/space.c

src/space.h

src/swift.h

src/threadpool.c

tests/Makefile.am

tests/testDump.c