Fixes #1857

Fixes #1706.

This removes one of the three build systems. CMake has never been officially
supported and is not updated with WAF and GYP. WAF itself is considered
legacy and will be removed once the GYP system is feature complete on
Unixes. GYP is used currently on Windows/MSVS.

This reverts commit 9bbca991.

Not stable enough.
- Windows snapshot linking broken
- Linux crash on ./node_g test/simple/test-stream-pipe-multi.js

This reverts commit 56e6952e.

thanks to Malte-Thorben Bruns for pointing this out

This commit removes one assert from test-console.js in which we check that
process.stderr.write returns true. In the case of a dump to a file we cannot
guarantee this any longer now that it goes through fs.WriteStream.

flock(LOCK_EX) always fails with EBADF, use fcntl(F_SETLK) instead.

This modifies the TTYWrap constructor to add another argument specifying if
it's a readable or writable TTY . That is stdin or stdout. If a TTYWrap is
not readable then writes to it are blocking.

This makes process.stdout blocking.

Fixes #1844.

Fixes #1813

Does not support sending net.Server objects only raw TCPWrap objects.

Fixes #1840

Speeds up http_simple benchmark by about 1.0%