cmake: add an option to skip thirdparty.inc on Windows (#10110)

Summary:
When building RocksDB with getdeps on Windows, `thirdparty.inc` get in the way since `FindXXXX.cmake` are working properly now.

This PR adds an option to skip that file when building RocksDB so we can disable it.

FB: see [D36905191](https://www.internalfb.com/diff/D36905191).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10110

Reviewed By: siying

Differential Revision: D36913882

Pulled By: fanzeyi

fbshipit-source-id: 33d36841dc0d4fe87f51e1d9fd2b158a3adab88f

CMakeLists.txt

@@ -89,7 +89,11 @@ include(CMakeDependentOption)
 if(MSVC)
   option(WITH_GFLAGS "build with GFlags" OFF)
   option(WITH_XPRESS "build with windows built in compression" OFF)
-  include(${CMAKE_CURRENT_SOURCE_DIR}/thirdparty.inc)
+  option(ROCKSDB_SKIP_THIRDPARTY "skip thirdparty.inc" OFF)
+
+  if(NOT ROCKSDB_SKIP_THIRDPARTY)
+    include(${CMAKE_CURRENT_SOURCE_DIR}/thirdparty.inc)
+  endif()
 else()
   if(CMAKE_SYSTEM_NAME MATCHES "FreeBSD" AND NOT CMAKE_SYSTEM_NAME MATCHES "kFreeBSD")
     # FreeBSD has jemalloc as default malloc