Merge InnoDB 5.7 from mysql-5.7.9.

Contains also

MDEV-10547: Test multi_update_innodb fails with InnoDB 5.7

	The failure happened because 5.7 has changed the signature of
	the bool handler::primary_key_is_clustered() const
	virtual function ("const" was added). InnoDB was using the old
	signature which caused the function not to be used.

MDEV-10550: Parallel replication lock waits/deadlock handling does not work with InnoDB 5.7

	Fixed mutexing problem on lock_trx_handle_wait. Note that
	rpl_parallel and rpl_optimistic_parallel tests still
	fail.

MDEV-10156 : Group commit tests fail on 10.2 InnoDB (branch bb-10.2-jan)
  Reason: incorrect merge

MDEV-10550: Parallel replication can't sync with master in InnoDB 5.7 (branch bb-10.2-jan)
  Reason: incorrect merge

BUILD/SETUP.sh

@@ -170,7 +170,7 @@ debug_cflags="-DEXTRA_DEBUG -DSAFE_MUTEX -DSAFEMALLOC"
 error_inject="--with-error-inject "
 #
 # Base C++ flags for all builds
-base_cxxflags="-felide-constructors -fno-exceptions -fno-rtti"
+base_cxxflags="-felide-constructors -fexceptions -fno-rtti"
 #
 # Flags for optimizing builds.
 # Be as fast as we can be without losing our ability to backtrace.

configure.cmake

@@ -56,7 +56,7 @@ IF(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
   # MySQL "canonical" GCC flags. At least -fno-rtti flag affects
   # ABI and cannot be simply removed. 
   SET(CMAKE_CXX_FLAGS 
-    "${CMAKE_CXX_FLAGS} -fno-exceptions -fno-rtti")
+    "${CMAKE_CXX_FLAGS} -fno-rtti")
 
   IF (CMAKE_EXE_LINKER_FLAGS MATCHES " -static " 
      OR CMAKE_EXE_LINKER_FLAGS MATCHES " -static$")

extra/CMakeLists.txt

@@ -77,7 +77,9 @@ IF(WITH_INNOBASE_STORAGE_ENGINE OR WITH_XTRADB_STORAGE_ENGINE)
       ../storage/innobase/buf/buf0checksum.cc
       ../storage/innobase/ut/ut0crc32.cc
       ../storage/innobase/ut/ut0ut.cc
+      ../storage/innobase/buf/buf0buf.cc
       ../storage/innobase/page/page0zip.cc
+      ../storage/innobase/os/os0file.cc
       )
 
   IF(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64le")