Bug 436430: changed "UNIX time" to "NSPR time" in the comments.  r=nelson.
Bug 436430: changed "UNIX time" to "NSPR time" in the comments.  r=nelson.

nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old,ekr/nss-old,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,nmav/nss,nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old