Bugzilla bug #5284: the lib version structures for libnspr3 and libplc3
are incorrectly named (still referring to libnspr21 and libplc21).
Modified files: lib/ds/Makefile, lib/prstreams/Makefile,
lib/libc/src/Makefile, lib/libc/src/plvrsion.c, pr/src/Makefile,
pr/src/prvrsion.c
Added files: lib/ds/plvrsion.c, lib/prstreams/plvrsion.c
git-svn-id: svn://10.0.0.236/trunk@28117 18797224-902f-48f8-a5cc-f745e15eee43
