linux: use ioctl(FIONBIO) to set O_NONBLOCK, saves a syscall

build: compile in dl.c on unix

Implement uv_dlopen and friends

Add uv__new_sys_error

Prepare libuv for shared library build

Add common.gypi to gyp-generated projects

unix: have uv_strerror() handle getaddrinfo() errors

windows: don't fail uv_listen with UV_EALREADY if already listening. fixes #227.

test: fix warning: implicit declaration of function ‘memcmp’

sunos: implement file watcher API

build: sunos expects -pthreads, not -pthread

build: fix gcc 3.x build

Detect gcc version, -fvisibility is a gcc 4.x switch.

windows: implement uv_tcp_nodelay and uv_tcp_keepalive

windows: when sharing a server socket, only call listen in the parent process

Map EHOSTUNREACH on Unix

win: fix fs__readdir buffer overflow bug

Thanks Runner Mei for pointing this out. Closes GH-224.

Fix MinGW build

win: flush output buffer before doing a console reset

win: fix function prototype

Mea culpa.

unix: add TCP keepalive and no-delay control knobs

unix: fix uv_freeaddrinfo() segfault on sunos

The system freeaddrinfo() on SunOS does not handle NULL values graciously.

windows: fixes queued_bytes for ipc pipes

Change return type of uv_get_*_memory() functions

... from double to uint64_t. Limit use of floating point in public API as much
as possible.

unix: remove unused variable

Improve ansi escape code support on windows