tree f587d45f251ac196c266c1b1de87aa758c07c55f
parent f13b893c2c017351710d259da9bfdf597e3cbf24
author that <github@that.at> 1440929285 +0200
committer Dees Troy <dees_troy@teamw.in> 1444918253 +0200

Improve error handling for zip install

- minzip: don't crash with corrupted zips (e.g. 4096 null bytes)
- twinstall: output error when zip doesn't contain update-binary
- twinstall: add strerror(errno) to system-level errors
- twinstall: correct message if /file_contexts could not be extracted
- twinstall: use TWFunc::Wait_For_Child for better waitpid errors
- twinstall: minor code cleanup

Change-Id: I53b156b0ec08755af2742bb71d1523ae38f4a82e