melting-pot: give friendlier dep change output

The fact that the dependencies do not match since the last successful
build, and therefore the component build is going to be executed, is not
necessarily a bad thing. The word "mismatch" conveys something wrong;
let's instead just point out what's changed, more neutrally.

Author: ctrueden

melting-pot.sh

@@ -663,7 +663,7 @@ do
       if [ "$bomV" ]
       then
         # G:A version is mismatched.
-        mismatch="$mismatch\n* $g:$a:$v != $bomV"
+        mismatch="$mismatch\n* $g:$a:$v -> $bomV"
       else
         # G:A version is not pinned.
         warn "$1: Unpinned dependency: $dep"
@@ -673,7 +673,7 @@ do
   if [ "$mismatch" ]
   then
     test "$row" -eq 1 && mismatch1=$mismatch ||
-      debug "$1: Mismatched dependencies (vs. success #$row):$mismatch"
+      debug "$1: Dependency changes since success #$row:$mismatch"
   else
     success=$deps
     break
@@ -682,7 +682,7 @@ do
 done
 test "$success" && echo "$success" || {
   test "$mismatch1" &&
-    info "$1: Mismatched dependencies:$mismatch1" ||
+    info "$1: Dependency changes since last success:$mismatch1" ||
     info "$1: No prior successes"
 }
 PRIOR