From: @tangqunzhang
Reviewed-by: @wqtshg,@xchu42,@ji_chen
Signed-off-by: @ji_chen

From: @chen_yemeng
Reviewed-by: 
Signed-off-by:

From: @zhou_chao1993
Reviewed-by: @wqtshg,@youui
Signed-off-by: @youui

From: @taoxiangdong
Reviewed-by: @wqtshg
Signed-off-by:

From: @ni100die
Reviewed-by: @wqtshg,@ji_chen
Signed-off-by: @ji_chen

last release memory first reuse for cache opt

From: @wangwenhua1
Reviewed-by: @xchu42,@ji_chen
Signed-off-by: @ji_chen

modified:   cmake/external_libs/protobuf_shared.cmake
	modified:   cmake/external_libs/protobuf_static.cmake
	modified:   ge/CMakeLists.txt
	modified:   ge/client/module.mk
	modified:   ge/common/CMakeLists.txt
	modified:   ge/common/ge_common.mk
	modified:   ge/executor/CMakeLists.txt
	modified:   ge/executor/module.mk
	modified:   ge/ge_inference.mk
	modified:   ge/ge_local_engine/CMakeLists.txt
	modified:   ge/ge_local_engine/module.mk
	modified:   ge/ge_runner.mk
	modified:   ge/graph/build/memory/CMakeLists.txt
	modified:   ge/graph/build/memory/module.mk
	modified:   ge/host_cpu_engine/CMakeLists.txt
	modified:   ge/host_cpu_engine/module.mk
	modified:   ge/offline/CMakeLists.txt
	modified:   ge/offline/module.mk
	modified:   metadef
	modified:   parser

Merge pull request !162 from taoxiangdong/dev