Merge branch 'stable-6.2' into stable-6.3

* stable-6.2:
  Remove unused imports
  Suppress non-externalized String warnings
  Remove unused API problem filters
  Silence API errors
  Silence API errors
  Silence API warnings

Change-Id: I71aa9f890c5eb05849ad16a00b9974da5e51171e

diff --cc org.eclipse.jgit.http.server/.settings/.api_filters
index 2c32c9864b9c2060309b8f5b4056412927391e79,2c32c9864b9c2060309b8f5b4056412927391e79..0000000000000000000000000000000000000000
deleted file mode 100644,100644
--- 1/org.eclipse.jgit.http.server/.settings/.api_filters
--- 2/org.eclipse.jgit.http.server/.settings/.api_filters
+++ /dev/null
@@@ -1,11 -1,11 +1,0 @@@
--<?xml version="1.0" encoding="UTF-8" standalone="no"?>
--<component id="org.eclipse.jgit.http.server" version="2">
--    <resource path="src/org/eclipse/jgit/http/server/UploadPackErrorHandler.java" type="org.eclipse.jgit.http.server.UploadPackErrorHandler">
--        <filter id="1210056707">
--            <message_arguments>
--                <message_argument value="6.1.1"/>
--                <message_argument value="statusCodeForThrowable(Throwable)"/>
--            </message_arguments>
--        </filter>
--    </resource>
--</component>

diff --cc org.eclipse.jgit/.settings/.api_filters
index 1683f33d0c19017ad93350dc71f4e5f1cbec4535,690575da68aa1f181ec861cf5f6c09eb310a2d44..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
--- 1/org.eclipse.jgit/.settings/.api_filters
--- 2/org.eclipse.jgit/.settings/.api_filters
+++ b/org.eclipse.jgit/.settings/.api_filters
@@@ -1,28 -1,96 +1,0 @@@
--<?xml version="1.0" encoding="UTF-8" standalone="no"?>
--<component id="org.eclipse.jgit" version="2">
 -    <resource path="src/org/eclipse/jgit/lib/ConfigConstants.java" type="org.eclipse.jgit.lib.ConfigConstants">
 -        <filter id="1142947843">
 -            <message_arguments>
 -                <message_argument value="5.13.2"/>
 -                <message_argument value="SHA1_IMPLEMENTATION"/>
 -            </message_arguments>
 -        </filter>
 -    </resource>
--    <resource path="src/org/eclipse/jgit/transport/AwsRequestSignerV4.java" type="org.eclipse.jgit.transport.AwsRequestSignerV4">
-         <filter id="1108344834">
 -        <filter id="1109393411">
--            <message_arguments>
-                 <message_argument value="5.13"/>
-                 <message_argument value="6.3"/>
 -                <message_argument value="5.13.1"/>
--                <message_argument value="org.eclipse.jgit.transport.AwsRequestSignerV4"/>
--            </message_arguments>
--        </filter>
--    </resource>
--    <resource path="src/org/eclipse/jgit/util/HttpSupport.java" type="org.eclipse.jgit.util.HttpSupport">
-         <filter id="1141899266">
 -        <filter id="1142947843">
--            <message_arguments>
-                 <message_argument value="5.13"/>
-                 <message_argument value="6.3"/>
 -                <message_argument value="5.13.1"/>
--                <message_argument value="urlEncode(String, boolean)"/>
--            </message_arguments>
--        </filter>
--    </resource>
-     <resource path="src/org/eclipse/jgit/util/Paths.java" type="org.eclipse.jgit.util.Paths">
-         <filter id="337768515">
 -    <resource path="src/org/eclipse/jgit/util/sha1/SHA1.java" type="org.eclipse.jgit.util.sha1.SHA1">
 -        <filter id="337764418">
--            <message_arguments>
-                 <message_argument value="org.eclipse.jgit.util.Paths"/>
 -                <message_argument value="org.eclipse.jgit.util.sha1.SHA1"/>
 -            </message_arguments>
 -        </filter>
 -        <filter id="421650549">
 -            <message_arguments>
 -                <message_argument value="org.eclipse.jgit.util.sha1.SHA1"/>
 -                <message_argument value="digest()"/>
 -            </message_arguments>
 -        </filter>
 -        <filter id="421650549">
 -            <message_arguments>
 -                <message_argument value="org.eclipse.jgit.util.sha1.SHA1"/>
 -                <message_argument value="digest(MutableObjectId)"/>
 -            </message_arguments>
 -        </filter>
 -        <filter id="421650549">
 -            <message_arguments>
 -                <message_argument value="org.eclipse.jgit.util.sha1.SHA1"/>
 -                <message_argument value="hasCollision()"/>
 -            </message_arguments>
 -        </filter>
 -        <filter id="421650549">
 -            <message_arguments>
 -                <message_argument value="org.eclipse.jgit.util.sha1.SHA1"/>
 -                <message_argument value="reset()"/>
 -            </message_arguments>
 -        </filter>
 -        <filter id="421650549">
 -            <message_arguments>
 -                <message_argument value="org.eclipse.jgit.util.sha1.SHA1"/>
 -                <message_argument value="setDetectCollision(boolean)"/>
 -            </message_arguments>
 -        </filter>
 -        <filter id="421650549">
 -            <message_arguments>
 -                <message_argument value="org.eclipse.jgit.util.sha1.SHA1"/>
 -                <message_argument value="toObjectId()"/>
 -            </message_arguments>
 -        </filter>
 -        <filter id="421650549">
 -            <message_arguments>
 -                <message_argument value="org.eclipse.jgit.util.sha1.SHA1"/>
 -                <message_argument value="update(byte)"/>
 -            </message_arguments>
 -        </filter>
 -        <filter id="421650549">
 -            <message_arguments>
 -                <message_argument value="org.eclipse.jgit.util.sha1.SHA1"/>
 -                <message_argument value="update(byte[])"/>
 -            </message_arguments>
 -        </filter>
 -        <filter id="421650549">
 -            <message_arguments>
 -                <message_argument value="org.eclipse.jgit.util.sha1.SHA1"/>
 -                <message_argument value="update(byte[], int, int)"/>
 -            </message_arguments>
 -        </filter>
 -    </resource>
 -    <resource path="src/org/eclipse/jgit/util/sha1/SHA1.java" type="org.eclipse.jgit.util.sha1.SHA1$Sha1Implementation">
 -        <filter id="1142947843">
 -            <message_arguments>
 -                <message_argument value="5.13.2"/>
 -                <message_argument value="Sha1Implementation"/>
--            </message_arguments>
--        </filter>
--    </resource>
--</component>