Merge branch 'net_refactor'

.gitignore

Makefile.am

changes/iphplapi

src/common/address_set.c

src/common/compat.c

src/common/compat.h

src/common/include.am

src/common/sandbox.c

src/common/sandbox.h

src/common/util.c

src/common/util.h

src/include.am

src/lib/log/escape.c

src/lib/log/escape.h

src/lib/log/include.am

src/lib/net/.may_include

src/lib/net/address.c

src/lib/net/address.h

src/lib/net/include.am

src/lib/net/ipv4.c