RFR: 8260198: TypeInstPtr::dump2() emits multiple lines if Verbose is set [v8]

[Xin Liu]

> Add a flag _suppress_cr to outputStream. outstream objects won't emit any CR if it's set.
> Correct TypeInstPtr::dump2 to make sure it only emits klass name once.
> Remove the comment because Klass::oop_print_on() has emitted the address of oop.
> 
> Before:
> 689  ConP  ===  0  [[ 821 ]]   Oop:java/lang/Stringjava.lang.String
> {0x000000010159d7c8} - klass: public final synchronized 'java/lang/String'
> - string: "a"
> :Constant:exact *
> 
> After:
> 689  ConP  ===  0  [[ 821 ]]   Oop:java.lang.String {0x000000010159d7c8} - klass: public final synchronized 'java/lang/String' - string: "a":Constant:exact *

Xin Liu has updated the pull request incrementally with one additional commit since the last revision:

  8260198: TypeInstPtr::dump2() emits multiple lines if Verbose is set
  
  add comments and hoist ResourceMark

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/2178/files
  - new: https://git.openjdk.java.net/jdk/pull/2178/files/6df63fe1..aeff9ecc

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=2178&range=07
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=2178&range=06-07

  Stats: 10 lines in 1 file changed: 1 ins; 1 del; 8 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2178.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2178/head:pull/2178

PR: https://git.openjdk.java.net/jdk/pull/2178