clarified signature: follow terminology of isabelle.Sessions and isabelle.Build;

--- a/Admin/components/components.sha1	Mon Feb 06 10:20:12 2023 +0100
+++ b/Admin/components/components.sha1	Mon Feb 06 10:30:53 2023 +0100
@@ -164,6 +164,7 @@
 171df3eb58bdac4cc495f773b797fa578f7d4be6 isabelle_setup-20220817.tar.gz
 7b1ce9bd85e33076fa7022eeb66ce15915d078d9 isabelle_setup-20221020.tar.gz
 cb9f061ccd7c6f90d00c8aa115aeea8679f3f996 isabelle_setup-20221028.tar.gz
+f582c621471583d06e00007c6acc01376c7395af isabelle_setup-20230206.tar.gz
 0b2206f914336dec4923dd0479d8cee4b904f544 jdk-11+28.tar.gz
 e12574d838ed55ef2845acf1152329572ab0cc56 jdk-11.0.10+9.tar.gz
 3e05213cad47dbef52804fe329395db9b4e57f39 jdk-11.0.2+9.tar.gz

--- a/Admin/components/main	Mon Feb 06 10:20:12 2023 +0100
+++ b/Admin/components/main	Mon Feb 06 10:30:53 2023 +0100
@@ -12,7 +12,7 @@
 foiltex-2.1.4b
 idea-icons-20210508
 isabelle_fonts-20211004
-isabelle_setup-20221028
+isabelle_setup-20230206
 jdk-17.0.6
 jedit-20211103
 jfreechart-1.5.3

--- a/src/Tools/Setup/src/Build.java	Mon Feb 06 10:20:12 2023 +0100
+++ b/src/Tools/Setup/src/Build.java	Mon Feb 06 10:30:53 2023 +0100
@@ -74,6 +74,7 @@
 
     public static String BUILD_PROPS = "build.props";
     public static String COMPONENT_BUILD_PROPS = "etc/build.props";
+    public static String META_INFO = "<meta_info>";
 
     public static String TITLE = "title";
     public static String MODULE = "module";
@@ -223,14 +224,14 @@
             return shasum(file, List.of(path(file)));
         }
 
-        public String shasum_props()
+        public String shasum_meta_info()
             throws NoSuchAlgorithmException, IOException, InterruptedException
         {
             TreeMap<String,Object> sorted = new TreeMap<String,Object>();
             for (Object x : _props.entrySet()) {
                 sorted.put(x.toString(), _props.get(x));
             }
-            return make_shasum("<props>",
+            return make_shasum(META_INFO,
                     sha -> sha.update(sorted.toString().getBytes(StandardCharsets.UTF_8)));
         }
     }
@@ -475,7 +476,7 @@
                 List<Path> compiler_deps = new LinkedList<Path>();
                 {
                     StringBuilder _shasum = new StringBuilder();
-                    _shasum.append(context.shasum_props());
+                    _shasum.append(context.shasum_meta_info());
                     for (String s : requirements) {
                         List<Path> paths = context.requirement_paths(s);
                         compiler_deps.addAll(paths);