Import memoffset from crates.io

This is generated with get_rust_pkg.py, plus
 - src/lib.rs, src/span_of.rs
 - patches/std.diff
   * Since Android does not support building with no-std, disable no-std
     and replace `core` with `std`.
 - Android.bp
 - patches/Android.bp.patch
   * remove doc-comment just to avoid one dependnecy. Can be added later.
 - TEST_MAPPING

Bug: 174797066
Test: mma
Test: tools/external_updater/updater.sh update --refresh --keep_date
      rust/crates/memoffset
Change-Id: I836d46eb71f1f0b1449318076e0eb266adbfe4c9

1 files changed, 19 insertions, 0 deletions

diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..c803657
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,19 @@
+name: "memoffset"
+description: "offset_of functionality for Rust structs."
+third_party {
+  url {
+    type: HOMEPAGE
+    value: "https://crates.io/crates/memoffset"
+  }
+  url {
+    type: ARCHIVE
+    value: "https://static.crates.io/crates/memoffset/memoffset-0.6.1.crate"
+  }
+  version: "0.6.1"
+  license_type: NOTICE
+  last_upgrade_date {
+    year: 2020
+    month: 12
+    day: 15
+  }
+}