child_process: do not set args before throwing

No point in setting args and options if TypeError
is being thrown.

fix #7456

Signed-off-by: Fedor Indutny <fedor@indutny.com>
crypto: improve memory usage

ClientHelloParser used to contain an 18k buffer that was kept around
for the life of the connection, even though it was not needed in many
situations. I changed it to be deallocated when it's determined to
be no longer needed.

Signed-off-by: Fedor Indutny <fedor@indutny.com>
configure: allow V8 snapshot for cross-compilation

Signed-off-by: Fedor Indutny <fedor@indutny.com>
doc: clarify `end` vs `finish` in streams

Adds a section to the transform stream docs to clarify the
difference between the `end` event and the `finish` events.
Also clarifies the wording on the `end` event.
doc: document url `slashes` property

Slashes should be documented, because 3rd-party protocols -- those
postfixed with `://` -- would incorrectly `format` and `parse` if they
didn't set/get the `slashes` option.

Signed-off-by: Timothy J Fontaine <tjfontaine@gmail.com>
tls: fix performance issue

See https://github.com/orangemocha/node-connection-drop

I have pinpointed the performance degradation to
https://github.com/joyent/node/commit/ac2263b77f3f346458d06fc019de27e24c63cee0

This change brings performance back to the orginal levels.