Add support for configuring the minimum log level at compile time
Add support for configuring the minimum log level at compile time

The minimum log level can be set by defining to macro BPLOG_MINIMUM_SEVERITY
to one of google_breakpad::LogStream::Severity values. The default is
SEVERITY_INFO.

BUG=none
R=mark@chromium.org

Review URL: https://breakpad.appspot.com/724002

git-svn-id: 7939527bf0a06ad24ad020f729d5600cb42ed5d7@1231 4c0a9323-5329-0410-9bdc-e9ce6186880e

wesen/google-breakpad,wesen/google-breakpad,bittorrent/breakpad,bittorrent/breakpad,bittorrent/breakpad,wesen/google-breakpad,wesen/google-breakpad,wesen/google-breakpad,bittorrent/breakpad,bittorrent/breakpad,bittorrent/breakpad,wesen/google-breakpad,bittorrent/breakpad