Suppress non-externalized string warnings

for texts which don't need to be translatable.

Change-Id: Iacac5df9525ddbc9942b7c440450b6aad4864135

org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/BareSuperprojectWriter.java

diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/BareSuperprojectWriter.java b/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/BareSuperprojectWriter.java
index d191e23..e511a68 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/BareSuperprojectWriter.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/BareSuperprojectWriter.java
@@ -157,7 +157,7 @@ private void prepareIndex(List<RepoProject> projects, DirCache index,
 			if (ObjectId.isId(proj.getRevision())) {
 				objectId = ObjectId.fromString(proj.getRevision());
 				if (config.recordRemoteBranch && proj.getUpstream() != null) {
-					cfg.setString("submodule", name, "ref", proj.getUpstream());
+					cfg.setString("submodule", name, "ref", proj.getUpstream()); //$NON-NLS-1$//$NON-NLS-2$
 				}
 			} else {
 				objectId = callback.sha1(url, proj.getRevision());

org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/RepoCommand.java

diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/RepoCommand.java b/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/RepoCommand.java
index 9979664..d30e8d6 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/RepoCommand.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/RepoCommand.java
@@ -255,7 +255,8 @@ public RemoteFile readFileWithMode(String uri, String ref, String path)
 	@SuppressWarnings("serial")
 	static class ManifestErrorException extends GitAPIException {
 		ManifestErrorException(Throwable cause) {
-			super(RepoText.get().invalidManifest + " " + cause.getMessage(), cause);
+			super(RepoText.get().invalidManifest + " " + cause.getMessage(), //$NON-NLS-1$
+					cause);
 		}
 	}
 

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsBlockCacheConfig.java

diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsBlockCacheConfig.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsBlockCacheConfig.java
index 20f4666..fa68b97 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsBlockCacheConfig.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsBlockCacheConfig.java
@@ -344,7 +344,7 @@ private void loadPackExtConfigs(Config config) {
 			if (packExtsDuplicates.size() > 0) {
 				String duplicatePackExts = packExtsDuplicates.stream()
 						.map(PackExt::toString)
-						.collect(Collectors.joining(","));
+						.collect(Collectors.joining(",")); //$NON-NLS-1$
 				throw new IllegalArgumentException(MessageFormat.format(
 						JGitText.get().duplicatePackExtensionsSet,
 						CONFIG_CORE_SECTION, subSection,
@@ -480,7 +480,7 @@ private static DfsBlockCachePackExtConfig fromConfig(Config config,
 				throw new IllegalArgumentException(
 						JGitText.get().noPackExtGivenForConfiguration);
 			}
-			String[] extensions = packExtensions.split(" ", -1);
+			String[] extensions = packExtensions.split(" ", -1); //$NON-NLS-1$
 			Set<PackExt> packExts = new HashSet<>(extensions.length);
 			for (String extension : extensions) {
 				try {