Disable flaky zend test

Summary: Depends on timing.  I don't know how this can fail to run in <1
second, but it did on my diff.

Reviewed By: @ptarjan

Differential Revision: D1477602
Mark OSS tests as skipped if there's any infra issues

Summary: These fail when there's internet conenctivity issues. Given they fail in large batches a retry doesn't seem like a worthwhile approach (as each framework is effecitvely a retry for downloading phpunit).

Also, removed __FILE__ from the error message as it always said utils.php :p

Reviewed By: @ptarjan

Differential Revision: D1476671
Free each function's ProfTransRec after optimizing it

Summary: And don't allocate a ProfTransRec for non-profiling translations.

Reviewed By: @bertmaher

Differential Revision: D1477165
cmake installations should no longer put files in hphp and now put them in hhvm

Summary: When installing hhvm all the lib files should now be in lib.../hhvm rather than lib.../hphp.

Reviewed By: @ptarjan

Differential Revision: D1477442
Stop doing sketchy guard optimization in pushStLoc

Summary: I feel this optimization has always been a little dodgy, but it hasn't
bitten us until we started trying to jit loops.

The high-level overview is that the loosened guards resulting from
passing DataTypeGeneric here cause breakage when it happens inside a
loop, if the truth value of the condition the loop is guarding changes
inside the loop.

Reviewed By: @swtaarrs

Differential Revision: D1473217
Implement RecursiveCallbackFilterIterator

Summary: Fixes #1894
Closes https://github.com/facebook/hhvm/pull/3350

Reviewed By: @LiraNuna

Differential Revision: D1475169

Pulled By: svcscm
Fix out-of-tree builds rebuilding too much

Summary: This fixes out-of-tree builds rebuilding things that are already built.  I believe this was missing from 3f3ee1aab336d2194ca79871810e6abdbdf5717b
Closes https://github.com/facebook/hhvm/pull/3354

Reviewed By: @LiraNuna

Differential Revision: D1475785

Pulled By: svcscm
Add cygwin to ifdef blocks

Summary: | data |Several places that are already checking for apple need to also check for cygwin, since the workarounds (such as turning off jit or disabling some elfwriter code) are the same for both OS's

Some of these may need to be expanded even more - it may be helpful in the future to define a "linux" for
not apple, not bsd, not windows in cygwin, mingw, or msvc flavors to avoid really convoluted ifdef lines

Reviewed By: @JoelMarcey

Differential Revision: D1464299
Windows header fun

Summary: Windows headers are not well behaved

VOID
STRICT
ERROR

are all defined - this finds the places where they clash and undefs them if necessary after the includes (sigh)

also fixes a header included twice that was making lint angry

Reviewed By: @JoelMarcey

Differential Revision: D1459782
Add locking for each test

Summary: We've talked about problems when the same test is run many times in parallel. In repo mode it is almost certainly going to fail. Adding file level locking should solve this problem.

In my incredibly unscientific tests, this doesn't add any extra time over not having it. 1 minute 8 seconds average over 10 runs with and without it.

Reviewed By: @markw65

Differential Revision: D1474426
Fix parser infinite loop in xhp_format

Summary: We need to look for `Teof`.

Reviewed By: @joelbeales

Differential Revision: D1478814
Cygwin compile fixes

Summary: Small fixes and workaround for compiling on cygwin

mainly missing symbols, using windows apis for functionality, and a few workarounds for C library differences
such as MAX and isinf, isnan (which are all easily available in c++)

Reviewed By: @sgolemon

Differential Revision: D1414208
Fixing OSS Bug #3130

Summary: An interaction between the simplifier, guard relaxation, and member instructions
was causing a Str to be relaxed to a Cell despite a ConcatStrStr consuming the
string.

Reviewed By: @swtaarrs

Differential Revision: D1467017