minor script renaming, for clarity

contrib/single_file_decoder/create_single_file_decoder.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# Where to find the sources
+ZSTD_SRC_ROOT="../../lib"
+
+
+# Amalgamate the sources
+./combine.sh -r "$ZSTD_SRC_ROOT" -r "$ZSTD_SRC_ROOT/common" -r "$ZSTD_SRC_ROOT/decompress" -o zstddeclib.c zstddeclib-in.c
+# Did combining work?
+if [ $? -ne 0 ]; then
+  echo "Combine script: FAILED"
+  exit 1
+fi
+echo "Combine script: PASSED"