Use md5 -q for HashProgramOutput.sh, to show only the checksum.

Summary:
This option is supported on both BSDs and macOS, and ensures the command
also works if GNU coreutils are not installed.

Reviewers: ddunbar, jdoerfert, serge-sans-paille, tra

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D83411

Author: DimitryAndric

HashProgramOutput.sh

@@ -18,7 +18,7 @@ fi
 
 mv $1 $1.bak
 if [ $is_md5sum = "0" ]; then
-    $md5cmd < $1.bak > $1
+    $md5cmd -q < $1.bak > $1
 else
     $md5cmd < $1.bak | cut -d' ' -f 1 > $1
 fi