Changed signature of onNewConnection in Acceptor to take non-const TransportInfo

Summary: We need to modify TransportInfo in non open source code for
integrating SSL Fingerprinting.

Reviewed By: dcsommer

Differential Revision: D1462392
Belatedly update NEWS for Notorious

Reviewed By: @edwinsmith

Differential Revision: D1462813
add variadic function to fb_intercept test

Summary: ... to demonstrate an issue.

Reviewed By: @billf

Differential Revision: D1463572
fb_intercept now accounts for variadic functions

Summary: ... when determining the params of a call to an intercepted
 variadic function, the variadic capture param on the stack is an array
 that need to be iterated through, rather than passed along directly.

Reviewed By: @billf

Differential Revision: D1463583
D1462392 Breaks HHVM Open Source Build

Summary: This reverts commit ed18f617bfc4d809b7e3d3514ce40303d60361c9.

In the slew of test failues that were overriden was an important one...

```
Fail	hhvm cmake verification
build page No binary found.
```

No binary found means the compile failed.

Reviewed By: @LiraNuna

Differential Revision: D1463229