Rename libunicode_width

* Use libunicode_width.rust_sysroot to avoid conflict
  with libunicode_width in external/rust/crates/unicode-width.

Test: make
Change-Id: If55b0d0e1a8f629bf4958248c2de7fa3ddefc56b
1 file changed
tree: 6deedad0af8fb6fa221dbb06e1b7bfb2d0678d4e
  1. bootstrap/
  2. darwin-x86/
  3. linux-x86/
  4. OWNERS