Bug 946878 - Don't pass unknown options over to jemalloc configure. r=glandium

configure.in

@@ -9039,7 +9039,7 @@ fi
 # Run jemalloc configure script
 
 if test -z "$MOZ_NATIVE_JEMALLOC" -a "$MOZ_MEMORY" && test -n "$MOZ_JEMALLOC3" -o -n "$MOZ_REPLACE_MALLOC"; then
-  ac_configure_args="$_SUBDIR_CONFIG_ARGS --build=$build --host=$target --enable-stats --with-jemalloc-prefix=je_"
+  ac_configure_args="--build=$build --host=$target --enable-stats --with-jemalloc-prefix=je_"
   if test -n "$MOZ_REPLACE_MALLOC"; then
     # When using replace_malloc, we always want memalign and valloc exported from jemalloc.
     ac_configure_args="$ac_configure_args ac_cv_func_memalign=yes"