unix: remove unused flag UV__PENDING

unix, windows: rename flags UV__ACTIVE, UV__REF

Rename UV__ACTIVE and UV__REF to UV__HANDLE_ACTIVE and UV__HANDLE_REF to make
it clear that they apply to handles, not requests or loops.

unix: rework pending handle/req logic

test: clean up test-loop-handles.c

test: fix double close in test-loop-handles.c

win/process.c: stdio fd should default to ignore

unix: fix indentation in sunos.c

win/process.c: remove unused function duplicate_std_handle

unix: fix getaddrinfo bad pointer deref

unix: allow specifying FDs to be inherited by a child process

Previously the only option was to create a pipe or an ipc channel. This
patch makes it possible to inherit a handle that is

unix: allow specifying FDs to be inherited by a child process

Previously the only option was to create a pipe or an ipc channel. This
patch makes it possible to inherit a handle that is already open in the
parent process. It also makes it possible to set more than just stdin,
stdout and stderr.

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windows: allow specifying FDs to be inherited by a child process

Previously the only option was to create a pipe or an ipc channel. This
patch makes it possible to inherit a handle that

windows: allow specifying FDs to be inherited by a child process

Previously the only option was to create a pipe or an ipc channel. This
patch makes it possible to inherit a handle that is already open in the
parent process. There is also room for setting more than just stdin,
stdout and stderr, although this is not supported yet.

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Get rid of UV_LEAN_AND_MEAN

unix, windows: set active flag on unref'd handles

A logic bug in uv__handle_start() and uv__handle_stop() stopped the active flag
from getting set (or unset) on unref'd handles.

unix: update timer if already active

uv_timer_start() no longer returns an error when the timer is already active,
now it just updates the timer. Consistent with the uv-win implementatio

unix: update timer if already active

uv_timer_start() no longer returns an error when the timer is already active,
now it just updates the timer. Consistent with the uv-win implementation.

Fixes #425.

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test: add 'is active?' checks to test-timer.c

test: remove stale UNIX socket before running test

Fixes spurious test and benchmark failures.

test: remove test-eio-overflow.c

Unreliable, it's timing / system load sensitive.

unix: remove unused __attribute__((unused))

Fix sunos build: undeclared variable 'handle'

unix: pack uv structs more

Try to avoid alignment holes on x86_64. Shaves off 4-8 bytes from most structs.

unix: don't pass sockaddr to accept()

Shaves a few nanoseconds off the accept() syscall.

unix: split up loop.c

Move prepare/check/idle watcher code to loop-watcher.c so it can be reused for
the linux backend.

unix: shave about 100 bytes off uv_udp_send_t

unix: turn field stream->blocking into a flag

Saves 4 bytes.

unix: fix up asserts in core.c and stream.c