Add test for uv_fs_fstat, implement on unix.

windows: fix issue with SetFileCompletionNotificationModes on 64bit xp

windows: include _stat struct into uv_fs_t

unix: Fix test-gethostbyname

unix: split out stream into its own file

unix: split out pipe

unix: split out tcp module

Simplify Unix makefile

unix: split out uv_spawn into src/unix/process.c

move src/uv-unix.c to src/unix/core.c

unix: split out error code into separate file

unix: Split out c-ares integration into separate file

split out unix's udp source

docs for uv_fs methods

Update .mailmap

Update AUTHORS, add .mailmap

submit error to correct loop

Move private headers into include/uv-private

Move src/ev to src/unix/ev

Move unix platform files into src/unix

move eio stuff into src/unix

Multiplicity update on unix

Does not yet support multithreaded use of the thread pool.

multiplicity: update benchmarks

update tests for multiplicity

win: multiplicity