unserialize() and call_user_func_array() were straightforward. They were
called from all over the runtime, but I renamed those implementations
and codemodded the runtime.
The is_* functions were only ever being called by the CVarRef signature,
so I deleted all the other ones (same for f_gettype). Only some of the
is_* functions were being called from the runtime, so I made inline
versions of those without the f_ prefix.
When a callback throws an exception, we catch it, and then handle
the exception after the libcurl function that invoked the callback
returns.
But we weren't checking the exception after some libcurl calls that
could invoke callbacks, which leaked the exception object in RELEASE
builds, and asserted in DEBUG builds.
This change is mostly for FB internal organizational reasons.
Building is not effected beyond the fact that the target now
lands in hphp/hhvm/hhvm rather than src/hhvm/hhvm.
smith