ci, bugfix: fix windows build (#367)

Author: ngot

appveyor.yml

@@ -1,6 +1,4 @@
-environment:
-  matrix:
-    - image: Visual Studio 2017
+image: Visual Studio 2017
 
 platform:
   - x64
@@ -11,9 +9,8 @@ install:
   - git submodule update
 
 test_script:
-  - IF /I "%APPVEYOR_BUILD_WORKER_IMAGE%" == "Visual Studio 2017"
-  - IF /I "%PLATFORM%" == "x64" ECHO "x64 building..." && CALL "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64 &&   build release amd64 && cd test && ..\bin\Windows_amd64_release\fibjs.exe --prof main.js
-  - IF /I "%PLATFORM%" == "x86" ECHO "x86 building..." && CALL "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86 &&   build release i386 && cd test && ..\bin\Windows_i386_release\fibjs.exe --prof main.js
+  - IF /I "%PLATFORM%" == "x64" call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat" && ECHO "x64 building..." && build release amd64 && cd test && ..\bin\Windows_amd64_release\fibjs.exe --prof main.js
+  - IF /I "%PLATFORM%" == "x86" call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars32.bat" && ECHO "x86 building..." && build release i386 && cd test && ..\bin\Windows_i386_release\fibjs.exe --prof main.js
   - IF /I "%APPVEYOR_REPO_TAG%" == "false" set APPVEYOR_REPO_TAG_NAME=dist
   - mkdir %APPVEYOR_REPO_TAG_NAME%
   - IF /I "%PLATFORM%" == "x64" copy .\bin\Windows_amd64_release\fibjs.exe .\%APPVEYOR_REPO_TAG_NAME%\fibjs-%APPVEYOR_REPO_TAG_NAME%-windows-x64.exe