Remove carriage return characters when loading configuration files.

Issue: sbt/sbt-launcher-package#165

src/universal/bin/sbt

@@ -135,7 +135,7 @@ process_my_args () {
 }
 
 loadConfigFile() {
-  cat "$1" | sed '/^\#/d' | while read line; do
+  cat "$1" | sed '/^\#/d;s/\r$//' | while read line; do
     eval echo $line
   done
 }