Completed last fix: don't use backquotes in here-documents; it confuses

ash.  (The backquotes were only used to implement a slower version of
${foo-$bar} anyway.)

gnu/usr.bin/send-pr/send-pr.sh

@@ -319,21 +319,13 @@ X-send-pr-version: $VERSION
 
 >Submitter-Id:   $SUBMITTER
 >Originator:     $ORIGINATOR
->Organization:   `if [ -n "$ORGANIZATION" ]; then
-                  	echo "$ORGANIZATION"
-                  else
-                  	echo "$ORGANIZATION_C" ;
-                  fi ; `
+>Organization:   ${ORGANIZATION-$ORGANIZATION_C}
 >Confidential:   $CONFIDENTIAL_C
 >Synopsis:       $SYNOPSIS_C
 >Severity:       $SEVERITY_C
 >Priority:       $PRIORITY_C
 >Category:       $CATEGORY_C
->Release:        `if [ -n "$DEFAULT_RELEASE" ]; then
-                  	echo "$DEFAULT_RELEASE"
-                  else
-                  	echo "$RELEASE_C"
-                  fi ; `
+>Release:        ${DEFAULT_RELEASE-$RELEASE_C}
 >Class:          $CLASS_C
 >Environment: