Use bazel in appveyor (#612)

+publish jni dll
diff --git a/BUILD b/BUILD
index e4f24cc..6265b71 100644
--- a/BUILD
+++ b/BUILD
@@ -23,6 +23,24 @@
     visibility = ["//visibility:public"],
 )
 
+config_setting(
+    name = "windows",
+    values = {"cpu": "x64_windows"},
+    visibility = ["//visibility:public"],
+)
+
+config_setting(
+    name = "windows_msvc",
+    values = {"cpu": "x64_windows_msvc"},
+    visibility = ["//visibility:public"],
+)
+
+config_setting(
+    name = "windows_msys",
+    values = {"cpu": "x64_windows_msys"},
+    visibility = ["//visibility:public"],
+)
+
 genrule(
     name = "copy_link_jni_header",
     srcs = ["@openjdk_linux//:jni_h"],
@@ -35,6 +53,9 @@
     srcs = select({
         ":darwin": ["@openjdk_macos//:jni_md_h"],
         ":darwin_x86_64": ["@openjdk_macos//:jni_md_h"],
+        ":windows_msys": ["@openjdk_win//:jni_md_h"],
+        ":windows_msvc": ["@openjdk_win//:jni_md_h"],
+        ":windows": ["@openjdk_win//:jni_md_h"],
         "//conditions:default": ["@openjdk_linux//:jni_md_h"],
     }),
     outs = ["jni/jni_md.h"],