Remove obsolete _DLL_FOR_HNS ifdef
friends don't let friends write code in Java

add a thorn in my eye to CRUFT.txt.
TS-1834: force absolute paths to fix logstats unit tests
TS-1794 Replace all usage of ts_debug_assert() with ts_assert()
TS-986 ts/experimental has a dependency on netinet/net.h (for struct in_addr)
TS-1848: Fix field_value_set_int64() wrapper

Converting int64_t to uint32_t is unnecessary. Just use
field->value_set_int64() to fix it.
TS-1820: Another round of ATS_UNUSED

Replacing all the (void)foos I noticed in the last commits with ATS_UNUSED.
Revert "TS-1847: Don't trash buffer in MIOBuffer::fill"

This reverts commit 10b3e1cff6e40725562a80b39b6d52bede104616.