[jdk17u-dev] RFR: 8348986: Improve coverage of enhanced exception messages

[Alexey Bakhtin]

I'd like to backport JDK-8348986 to control sensitive information in Exception messages.

Backport from https://github.com/openjdk/jdk21u-dev/pull/2132 is not clean. The following changes were applied manually:
- src/java.base/share/classes/sun/nio/ch/DatagramSocketAdaptor.java
    - copyright year
- src/java.base/share/classes/sun/nio/ch/NioSocketImpl.java
    - Throwing IOException from the connect() method is updated manually because of a context difference
- src/java.base/share/classes/module-info.java
    - exports sun.security.util updated manually
- src/java.base/share/classes/java/net/Inet4AddressImpl.java
    - changes discarded. JDK17 does not have JDK-8244202 and related changes : lookupAllHostAddr(String hostname, LookupPolicy lookupPolicy)
- src/java.base/share/classes/java/net/InetAddress.java
    - throwing UnknownHostException from NameServiceAddresses::get is updated manually because of context differences
    - import section
    - no CachecdLookup and ValidCachedLookup classes in JDK17. changes discarded
- src/java.base/share/classes/java/net/Proxy.java
    - copyright year
- src/java.base/share/classes/java/net/SocketPermission.java
    - copyright year
- src/java.base/share/classes/java/net/SocksSocketImpl.java
    - copyright year
- src/java.base/share/classes/java/net/URI.java
    - import section
- src/java.base/share/classes/java/net/URL.java
    - copyright year
- src/java.base/share/classes/java/net/URLStreamHandler.java
    - copyright year
- src/java.base/share/classes/sun/net/www/protocol/jar/Handler.java
    - copyright year
- src/java.base/windows/native/libnet/Inet4AddressImpl.c
    - copyright year
- src/java.base/windows/native/libnet/Inet6AddressImpl.c
    - copyright year
- src/java.base/share/native/libnet/net_util.h
    - copyright year
    - getEnhancedExceptionsAllowed() declaration added manually because of context difference
- src/java.naming/share/classes/com/sun/jndi/toolkit/url/Uri.java
    - parseCompat method is updated manually because of context differences
- src/java.base/windows/classes/sun/nio/ch/WindowsAsynchronousSocketChannelImpl.java
    - copyright year
- src/java.base/windows/classes/sun/nio/fs/WindowsUserPrincipals.java
    - copyright year
    - lookup method is updated manually because of context differences
- src/jdk.httpserver/share/classes/sun/net/httpserver/simpleserver/JWebServer.java
    - no such class in JDK17

Modified and related JTREG tests are passed

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Commit messages:
 - Backport b6f827ef054959662190e21ce63fc3d3c45b92f3

Changes: https://git.openjdk.org/jdk17u-dev/pull/3989/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3989&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8348986
  Stats: 948 lines in 41 files changed: 683 ins; 109 del; 156 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3989.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3989/head:pull/3989

PR: https://git.openjdk.org/jdk17u-dev/pull/3989