Bug 400840 - can't build parallel build with -save-temps, r=luser a=damons

modules/libmar/src/Makefile.in

@@ -71,3 +71,7 @@ ifdef HOST_NSPR_MDCPUCFG
 HOST_CFLAGS     += -DMDCPUCFG=$(HOST_NSPR_MDCPUCFG)
 endif
 endif
+
+# The intermediate (.ii/.s) files for host and target can have the same name...
+# disable parallel builds
+.NOTPARALLEL: