Reintroduce support for TCL-style substitutions.

It seems some people really are depending on the $1 syntax
to bind variables.  Ok.

Bug: 5926203
Change-Id: Iae0cc6a0882b536fb5f3cdad687a6d7b41843d9f
2 files changed
tree: 1387d422d9fcbf49ac96838b5b280a58e684be4f
  1. android/
  2. dist/
  3. CleanSpec.mk
  4. ThirdPartyProject.prop