Stop bundling ijar's sources in bazel_tools

Instead bundle ijar's zipper binary so the skylark rules that depends on it
can use it from @bazel_tools.

A commit introducing windows config settings broke our appengine tutorial.

--
MOS_MIGRATED_REVID=114857080
diff --git a/tools/BUILD b/tools/BUILD
index aa30e07..6455ad0 100644
--- a/tools/BUILD
+++ b/tools/BUILD
@@ -20,29 +20,6 @@
 )
 
 filegroup(
-    name = "package-srcs",
-    srcs = glob(["**"]) + [
-        "//tools/build_defs/d:srcs",
-        "//tools/build_defs/docker:srcs",
-        "//tools/build_defs/jsonnet:srcs",
-        "//tools/build_defs/pkg:srcs",
-        "//tools/build_defs/sass:srcs",
-        "//tools/build_rules/appengine:srcs",
-        "//tools/build_rules/closure:srcs",
-        "//tools/build_rules/go:srcs",
-        "//tools/build_rules/rust:srcs",
-        "//tools/buildstamp:srcs",
-        "//tools/jdk:package-srcs",
-        "//tools/genrule:srcs",
-        "//tools/cpp:srcs",
-        "//tools/j2objc:srcs",
-        "//tools/objc:srcs",
-        "//tools/test:srcs",
-        "//tools/python:srcs",
-    ],
-)
-
-filegroup(
     name = "embedded_tools_srcs",
     srcs = glob(["**"]) + [
         "//tools/android/jack:srcs",
@@ -65,5 +42,6 @@
         "//tools/objc:srcs",
         "//tools/python:srcs",
         "//tools/test:srcs",
+        "//tools/zip:srcs",
     ],
 )