test_storage: fix compilation with musl 1.2.0
datastorage/test: improve scalability and performance
datastorage: fixed use of wrong client search
general: add memory auditing
memory auditing: bug fixes to memory auditing and hearing map
datastorage: fixes to linked list handling
tcpsocket: fix read callback function and arbitrary memory allocations
tcpsocket: leave loop if we read 0 byte

Furthermore, you can now dump the memory usage by sending a SIGHUP to
dawn process.

Signed-off-by: Nick Hainke <vincent@systemli.org>