* malloc/memusage.sh (memusageso): Add quotes.
(memusagestat): Likewise.
* debug/xtrace.sh (pcprofileso): Likewise.
(pcprofiledump): Likewise.
* debug/Makefile ($(objpfx)xtrace): Use $LIB in SLIBDIR
replacement.
* malloc/Makefile ($(objpfx)memusage): Likewise.