Bug 977869: LoadMechanismList doesn't need to re-initialize mechanismStrings if it's already initialized. r=emaldona,rrelyea.
Bug 977869: LoadMechanismList doesn't need to re-initialize
mechanismStrings if it's already initialized. r=emaldona,rrelyea.

thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss