Fixes bug 1067196 - Added columns choice to the Reports tab of signature report.
fix bug 1071397 - download and cache breakpad.tar.gz, unless on non-Linux x86_64 in which case build breakpad
fix bug 1071410 - handle all enums in switch
Merge pull request #2390 from rhelmer/bug1071397-download-cache-breakpad-on-linux64

fix bug 1071397 - download and cache breakpad.tar.gz, unless on non-Linu...
Merge pull request #2376 from AdrianGaudebert/1067196-signature-report-columns-choice

Fixes bug 1067196 - Added columns choice to the Reports tab of signature report.
Merge pull request #2391 from rhelmer/bug1071410-compile-stackwalker-on-mac

fix bug 1071410 - handle all enums in switch
fixes bug 1066344 - accept Windows NT as a platform
fixes bug 1071043 - Do a better job of sanitizing stackwalker pipe dump, r=@luser
Merge pull request #2394 from peterbe/bug-1066344-accept-windows-nt-as-a-platform

fixes bug 1066344 - accept Windows NT as a platform
Merge pull request #2387 from peterbe/bug-1071043-do-a-better-job-of-sanitizing-stackwalker-pipe-dump

fixes bug 1071043 - Do a better job of sanitizing stackwalker pipe dump