Sync'd various Makefile.ins to their Makefile counterparts. Removed nspr & nspr20 from REQUIRES.  Removed NSPR_LDFLAGS. Changed LIBNSPR refs to NSPR_LIBS. Removed leftover NSPR20 ifdefs.
Sync'd various Makefile.ins to their Makefile counterparts.
Removed nspr & nspr20 from REQUIRES.  Removed NSPR_LDFLAGS.
Changed LIBNSPR refs to NSPR_LIBS.
Removed leftover NSPR20 ifdefs.

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