Fix bugs in AppVeyor config and build script. Added call to test script.

.appveyor.yml

@@ -16,11 +16,8 @@ environment:
     MSYSTEM: MINGW64
     BIT: 64
 
-install:
-  -'%APPVEYOR_BUILD_FOLDER%\win_install.bat'
-
 build_script:
   - '%APPVEYOR_BUILD_FOLDER%\win_build.bat'
 
 test_script:
-  - 'echo No tests yet'
+  - '%APPVEYOR_BUILD_FOLDER%\test\test_libpostal.exe'

win_build.bat

@@ -14,8 +14,9 @@ IF %COMPILER%==msys2 (
   @echo on
   SET "PATH=C:\%MSYS2_DIR%\%MSYSTEM%\bin;C:\%MSYS2_DIR%\usr\bin;%PATH%"
 
-  bash -lc "cd $APPVEYOR_BUILD_FOLDER && . bootstrap.sh"
-  bash -lc "cd $APPVEYOR_BUILD_FOLDER && . configure --datadir=$APPVEYOR_BUILD_FOLDER/data"
+  bash -lc "cd $APPVEYOR_BUILD_FOLDER && cp -rf windows/* ./"
+  bash -lc "cd $APPVEYOR_BUILD_FOLDER && ./bootstrap.sh"
+  bash -lc "cd $APPVEYOR_BUILD_FOLDER && ./configure --datadir=/c"
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && make"
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && make install"
 )