libfolly: Update to 2019.10.07.00

Added patch to remove boost-thread.

Removed uClibc-ng patch. libfolly no longer builds there.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/libfolly/patches/102-no-boost-thread.patch

@@ -0,0 +1,12 @@
+diff --git a/CMake/folly-deps.cmake b/CMake/folly-deps.cmake
+index 0c212057..a4c06695 100644
+--- a/CMake/folly-deps.cmake
++++ b/CMake/folly-deps.cmake
+@@ -12,7 +12,6 @@ find_package(Boost 1.51.0 MODULE
+     program_options
+     regex
+     system
+-    thread
+   REQUIRED
+ )
+ list(APPEND FOLLY_LINK_LIBRARIES ${Boost_LIBRARIES})