Allow APEXER_TOOL_PATH to be set by a flag.

Add a --apexer_tool_path flag that can be used instead of the
APEXER_TOOL_PATH environment variable.

Test: apexer --help
Test: m com.android.support.apexer
Test: Build manual apex using --apexer_tool_path
Change-Id: I51e689a322574df6d2c4d29823e7bbe778b8e335
1 file changed
tree: 2b6b17fd44009256d874cd9db930134cc91d8dc6
  1. apexd/
  2. apexer/
  3. proto/
  4. tests/
  5. OWNERS
  6. PREUPLOAD.cfg
  7. TEST_MAPPING