fully remove ti dir
Move libevent patch to main hhvm repo

This patch now lives in:
hphp/patches/libevent-1.4.14b.patch
Update folly to 3:0
Bump to folly 3:1
Update to folly 3:2
Update SQLite to 3.8.6
Merge pull request #27 from MaideCa/update_sqlite_386

Update sqlite to 3.8.6
Revert "Merge pull request #27 from MaideCa/update_sqlite_386"

This reverts commit 0a66e285f449f6bf6191b7d3954b555c9b73d594, reversing
changes made to f391aa6bca9b9ed000ba54864bcb87fabf52e56d.
Don't remove compilation of FunctionalExcept.cpp on libc++

Non-stdc++ platforms don't have bits/functexcept.h, so do compile FunctionalExcept.cpp on those.
Merge pull request #28 from mcuelenaere/fix_functionalexcept_osx

Don't remove compilation of FunctionalExcept.cpp on libc++
Pull in PCRE 8.32
Add .gitignore for pcre

I ran the build with cmake and gitignored all the resulting untracked
files.
Selective sync from facebook internal repos
Merge pull request #29 from dcsommer/master

Selective sync from facebook internal repos
remove unneeded include
Merge pull request #30 from dcsommer/master

remove unneeded include
Sync ConnectionManager and ManagedConnection
Merge pull request #31 from dcsommer/master

Sync ConnectionManager and ManagedConnection
Remove unsupported gflags
Merge pull request #32 from dcsommer/master

Remove unsupported gflags