update build_dll.bat

c_wrapper/build_dll.bat

@@ -1,2 +1,2 @@
-go build -buildmode=c-shared  -trimpath -ldflags="-s -w"  -o openIM.dll  export.go
+go build -buildmode=c-shared  -trimpath -ldflags="-s -w"  -o openimsdk.dll  export.go
 

c_wrapper/build_run_test.bat

@@ -1,2 +1,2 @@
-gcc -o test.exe -L. openIM.dll test.c
+gcc -o test.exe -L. openimsdk.dll test.c
 test.exe

c_wrapper/build_test.bat

@@ -1 +1 @@
-gcc -o test.exe -L. openIM.dll test.c
+gcc -o test.exe -L. openimsdk.dll test.c