We were using the package name as the key to index APKs. APKs from the
same package got messed up and gave wrong signature summary. Switch to
using the package filename as the key, which is identical in a given build.
Also fix the trailing space when printing the signature summary.
Bug: 30418268
Test: Run with a target_files.zip that has multiple APKs from the same package.
Change-Id: I6317e8c05e987c5690915e05c294153d10e2f0ab
check_target_files_signatures.py was accidentally broken due to the
renaming of a variable in last commit. It escaped the checking from
pylint because it was a keyword ('all').
Bug: 21611858
Change-Id: I58c983e59c4a3e0018481d3c9ba328ed76f5c08a
This caught a few bugs/syntax errors (a few character classes were not
escaped properly in regex patterns, some indentation was illegal,
etc).
Change-Id: I50637607524e68c4fb9cad7167f58a46b8d26b2c