Improved the performance of Signer by checking if the logger is enabled before writing to it.
Improved the performance of Signer by checking if the logger is enabled before writing to it.

git-svn-id: e6b182708f0dc7b346a3f60ae86c439ec51c8c4b@503 8f3b247a-914b-0410-8f51-05e301831c82

frewsxcv/keyczar,jbtule/keyczar,kaulkie/keyczar,frewsxcv/keyczar,jbtule/keyczar-dev,jbtule/keyczar-dev,kaulkie/keyczar,matiasherranz/keyczar,Turlough/keyczar,jbtule/keyczar,Turlough/keyczar,asacamano/keyczar,jbtule/keyczar-dev,jbtule/keyczar-dev,matiasherranz/keyczar,divegeek/keyczar,divegeek/keyczar,jbtule/keyczar-dev,kaulkie/keyczar,kaulkie/keyczar,asacamano/keyczar,matiasherranz/keyczar,jbtule/keyczar,asacamano/keyczar,divegeek/keyczar,divegeek/keyczar,kaulkie/keyczar,asacamano/keyczar,frewsxcv/keyczar,frewsxcv/keyczar,jbtule/keyczar-dev,asacamano/keyczar,Turlough/keyczar,kaulkie/keyczar,jbtule/keyczar,jbtule/keyczar,matiasherranz/keyczar,matiasherranz/keyczar,divegeek/keyczar,kaulkie/keyczar,Turlough/keyczar,Turlough/keyczar,frewsxcv/keyczar,frewsxcv/keyczar,frewsxcv/keyczar,divegeek/keyczar,matiasherranz/keyczar,jbtule/keyczar,jbtule/keyczar,Turlough/keyczar,asacamano/keyczar,jbtule/keyczar-dev,matiasherranz/keyczar,divegeek/keyczar,Turlough/keyczar,asacamano/keyczar