RFR: 8287761: Make the logging of J2DBench stable

[Sergey Bylokhov]

Currently, the logging of the J2DBench differs from run to run. Each time the order of the parameters is random.

For example:
First run: `with to Default Frame, bounce, 1x1, SrcOver, ident, !extraalpha, !xormode, !clip, Default, from transvolimg translucent, !touchsrc, Nearest neighbor`
Next run: `with SrcOver, bounce, Nearest neighbor, ident, !touchsrc, to CompatImage(Opaque), Default, 1x1, !xormode, !clip, from bmcompatimg bitmask, !extraalpha
`
The root cause is that the options are stored in the Hashtable and printed in the "random" order. 

The fix replaces the usage of Hashtable by the LinkedHashMap. The code is tested on jdk1.7 and -source/-target 1.4

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Commit messages:
 - 8287761: Make the logging of J2DBench stable

Changes: https://git.openjdk.java.net/jdk/pull/9008/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=9008&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8287761
  Stats: 28 lines in 2 files changed: 5 ins; 5 del; 18 mod
  Patch: https://git.openjdk.java.net/jdk/pull/9008.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/9008/head:pull/9008

PR: https://git.openjdk.java.net/jdk/pull/9008