Fix a crash in the macOS Breakpad client as it was using APIs not available on 10.7 and 10.8.

Breakpad 0.1.2

- Fix macOS Xcode project build of the dump_syms tool

Breakpad 0.1.1

- Add JSON output format for minidump processor
- Support cross-compilation for Windows using MinGW
- Fix a problem symbolicating some Windows crashes

This is the 0.1.0 pseudo-release, mostly for use in VLC contribs, with adjusted Breakpad privacy policy URL