build: less MSVC warnings

Enable "Treat warnings as errors"

Removed/Silenced:
4005 - about redefinition of `PLATFORM` symbol
4996 - for the visible future I don't think we should be worried about the change in semantics of  `GetVersionEx`
4291 - for the `new` operator that has non side effects in FSReqWrap ```void *node::FSReqWrap::operator new(size_t,char *)```
4267 - when passing an int64 as int, and truncation might happen (depends on linkage)
4244 - when passing an int64 as int, and truncation will happen
4530 - no exception semantics (leaking from MS STL xlocale)

align macros between dtrace and ETW removes warnings:
NODE\SRC\NODE_DTRACE.CC(180) : warning C4002: too many actual parameters for macro 'NODE_NET_SOCKET_READ'
NODE\SRC\NODE_DTRACE.CC(196) : warning C4002: too many actual parameters for macro 'NODE_NET_SOCKET_WRITE'

added `verbose` to vcbuild.bat

build suppress errors

build: less MSVC warnings

Enable "Treat warnings as errors"

Removed/Silenced:
4005 - about redefinition of `PLATFORM` symbol
4996 - for the visible future I don't think we should be worried about the change in semantics of  `GetVersionEx`
4291 - for the `new` operator that has non side effects in FSReqWrap ```void *node::FSReqWrap::operator new(size_t,char *)```
4267 - when passing an int64 as int, and truncation might happen (depends on linkage)
4244 - when passing an int64 as int, and truncation will happen
4530 - no exception semantics (leaking from MS STL xlocale)

align macros between dtrace and ETW removes warnings:
NODE\SRC\NODE_DTRACE.CC(180) : warning C4002: too many actual parameters for macro 'NODE_NET_SOCKET_READ'
NODE\SRC\NODE_DTRACE.CC(196) : warning C4002: too many actual parameters for macro 'NODE_NET_SOCKET_WRITE'

added `verbose` to vcbuild.bat
tools: benchmark improvements + testing fix
node: enable `--harmony` by default

BIG & CRAZY

Signed-off-by: Refael Ackermann <refack@gmail.com>
crypto: remove duplicate declaration

Caused crashes in `Debug`
test: fixture certificate expired
test: tweaking test code

test-child-process-fork-net2.js - time limit too strict
test-cluster-worker-init.js - time limit too strict
test-force-repl.js - time limit too strict
test-fs-empty-readStream.js - time limit too strict
test-fs-realpath.js - Windows case normalization
test-fs-realpath.js - Windows case normalization
src: protect in case there is no toString()

triggered by test-regress-GH-4015.js with Debug build
src: refactoring `Start`