List new shasum for recent releases (bazel-contrib#255)

Closes bazel-contrib#253.

Author: siddharthab

README.md

@@ -5,6 +5,8 @@
 See notes on the [release](https://github.com/bazel-contrib/toolchains_llvm/releases)
 for how to get started.
 
+NOTE: For releases prior to 0.10.1, please also see [these notes](REPO_RENAME.md).
+
 <!-- Release Notes template is at .github/workflows/release_prep.sh -->
 
 ## Basic Usage

REPO_RENAME.md

@@ -0,0 +1,73 @@
+# Rename from bazel-toolchain to toolchains_llvm
+
+As part of the transfer to the bazel-contrib org, the repo has been renamed to
+`toolchains_llvm`. This has affected the dynamically generated source archives
+which now have a different tree prefix, and consequently, a different shasum.
+
+From release 0.10.1 onwards, the releases have all generated a release artifact
+which is guaranteed to be stable. But for prior releases, users need to change
+the `shasum` and `strip_prefix` attributes for referencing this repo.
+
+0.10.0:
+
+```bzl
+  strip_prefix = "toolchains_llvm-0.10.0",
+  shasum = "a2877b8bf596ee4c0310b50463796efd8f360dcb087675e9101e15c39e03d7ea",
+  url = "https://github.com/bazel-contrib/toolchains_llvm/archive/refs/tags/0.10.0.tar.gz",
+```
+
+0.9:
+
+```bzl
+  strip_prefix = "toolchains_llvm-0.9",
+  shasum = "b2d168315dd0785f170b2b306b86e577c36e812b8f8b05568f9403141f2c24dd",
+  url = "https://github.com/bazel-contrib/toolchains_llvm/archive/refs/tags/0.9.tar.gz",
+```
+
+0.8.2:
+
+```bzl
+  strip_prefix = "toolchains_llvm-0.8.2",
+  shasum = "3e251524b3e8f3b9ec93848e5267c168424f43b7b554efc983a5291c33d78cde",
+  url = "https://github.com/bazel-contrib/toolchains_llvm/archive/refs/tags/0.8.2.tar.gz",
+```
+
+0.8.1:
+
+```bzl
+  strip_prefix = "toolchains_llvm-0.8.1",
+  shasum = "3bb45f480e3eb198f39fc97e91df2c2fc0beaabbea620ba3034ac505786a1813",
+  url = "https://github.com/bazel-contrib/toolchains_llvm/archive/refs/tags/0.8.1.tar.gz",
+```
+
+0.8:
+
+```bzl
+  strip_prefix = "toolchains_llvm-0.8",
+  shasum = "f121449dd565d59274b7421a62f3ed1f16ad7ceab4575c5b34f882ba441093bd",
+  url = "https://github.com/bazel-contrib/toolchains_llvm/archive/refs/tags/0.8.tar.gz",
+```
+
+0.7.2:
+
+```bzl
+  strip_prefix = "toolchains_llvm-0.7.2",
+  shasum = "ea7d247dd4a0058c008a6e8fa0855a69d57b0cb500271c7b48c1a28512608ecd",
+  url = "https://github.com/bazel-contrib/toolchains_llvm/archive/refs/tags/0.7.2.tar.gz",
+```
+
+0.7.1:
+
+```bzl
+  strip_prefix = "toolchains_llvm-0.7.1",
+  shasum = "5613b430a6b7f6d0eb03011976df53abe7f4cc6c3ec43be066b679c4ad81e3bf",
+  url = "https://github.com/bazel-contrib/toolchains_llvm/archive/refs/tags/0.7.1.tar.gz",
+```
+
+0.7:
+
+```bzl
+  strip_prefix = "toolchains_llvm-0.7",
+  shasum = "bb07651178c6fbdc0981799b96a09ea5b4f01d98a98ca64c679db1601a92a66f",
+  url = "https://github.com/bazel-contrib/toolchains_llvm/archive/refs/tags/0.7.tar.gz",
+```