RFR: 8264644: More complete ClassLoaderData for cld->print()

[Yi Yang]

Trivial chanage to make debugging happy, now cld->print() would be:

ClassLoaderData(0x00007ff17432b670)
 - name                'platform'
 - holder              WeakHandle: 0x00000007fef56678
 - class loader        0x7ff17432b828
 - metaspace           0x7ff17468a0b0
 - unloading           false
 - class mirror holder false
 - modified oops       true
 - keep alive          0
 - claim               strong
 - handles             43
 - dependency count    0
 - klasses             {java.sql.SQLFeatureNotSupportedException,java.sql.SQLNonTransientException,java.sql.SQLException,sun.util.resources.provider.NonBaseLocaleDataMetaInfo,org.ietf.jgss.GSSException,javax.sql.DataSource,java.sql.Wrapper,javax.sql.CommonDataSource,java.sql.Time,java.sql.Date,java.sql.Timestamp,sun.util.resources.cldr.provider.CLDRLocaleDataMetaInfo, }
 - packages            0x7ff17432bc20
 - module              0x7ff17432c520
 - unnamed module      0x7ff17432c3d0
 - dictionary          0x7ff17432c470
 - deallocate list     0x7ff0a4023bd0

-------------

Commit messages:
 - make debugging happy

Changes: https://git.openjdk.java.net/jdk/pull/3323/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3323&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8264644
  Stats: 52 lines in 2 files changed: 40 ins; 4 del; 8 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3323.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3323/head:pull/3323

PR: https://git.openjdk.java.net/jdk/pull/3323