Restore toolchain configs for Bazel 0.5.2 in its old location.

This change let old --crosstool_top and --java_toolchain values continue
to work.

Change-Id: I70cd4f02e0be2f33dc445f0e6ce2b2e09600f68c

configs/debian8_clang/0.1.0/BUILD

@@ -0,0 +1,77 @@
+package(default_visibility = ["//visibility:public"])
+
+cc_library(
+    name = "malloc",
+)
+
+cc_library(
+    name = "stl",
+)
+
+filegroup(
+    name = "empty",
+    srcs = [],
+)
+
+filegroup(
+    name = "cc_wrapper",
+    srcs = ["cc_wrapper.sh"],
+)
+
+# This is the entry point for --crosstool_top.  Toolchains are found
+# by lopping off the name of --crosstool_top and searching for
+# the "${CPU}" entry in the toolchains attribute.
+cc_toolchain_suite(
+    name = "toolchain",
+    toolchains = {
+        "k8|clang": ":cc-compiler-k8",
+        "armeabi-v7a|compiler": ":cc-compiler-armeabi-v7a",
+        "ios_x86_64|compiler": ":cc-compiler-ios_x86_64",
+    },
+)
+
+cc_toolchain(
+    name = "cc-compiler-k8",
+    all_files = ":empty",
+    compiler_files = ":empty",
+    cpu = "k8",
+    dwp_files = ":empty",
+    dynamic_runtime_libs = [":empty"],
+    linker_files = ":empty",
+    objcopy_files = ":empty",
+    static_runtime_libs = [":empty"],
+    strip_files = ":empty",
+    supports_param_files = 1,
+)
+
+
+# Android tooling requires a default toolchain for the armeabi-v7a cpu.
+cc_toolchain(
+    name = "cc-compiler-armeabi-v7a",
+    all_files = ":empty",
+    compiler_files = ":empty",
+    cpu = "local",
+    dwp_files = ":empty",
+    dynamic_runtime_libs = [":empty"],
+    linker_files = ":empty",
+    objcopy_files = ":empty",
+    static_runtime_libs = [":empty"],
+    strip_files = ":empty",
+    supports_param_files = 1,
+)
+
+# ios crosstool configuration requires a default toolchain for the
+# ios_x86_64 cpu.
+cc_toolchain(
+    name = "cc-compiler-ios_x86_64",
+    all_files = ":empty",
+    compiler_files = ":empty",
+    cpu = "local",
+    dwp_files = ":empty",
+    dynamic_runtime_libs = [":empty"],
+    linker_files = ":empty",
+    objcopy_files = ":empty",
+    static_runtime_libs = [":empty"],
+    strip_files = ":empty",
+    supports_param_files = 1,
+)