[11u] RFR: 8217634: RunTest documentation and usability update

[Lindenmaier, Goetz]

Hi,

I had to do a lot of resolves for this one. It passed
Our build and testing.

This change has a lot of syntactic corrections, like
adding line breaks. Many of these are in code not in 11.
I skipped them.

The change adds documentation for JCOV. This is not 
supported by 11 (and I can't see "8215729: Enhance makefiles 
to allow collecting code coverage with JCov" 
https://bugs.openjdk.java.net/browse/JDK-8215729 was downported), 
so I removed the sections.

patching file doc/testing.html

I added the documentation text for AOT Modules.
Skipped renaming id vm_options-1 to vm_options-2 because
it does not exist in this file.

patching file doc/testing.md
Two hunks failed. The first corrects a 
sentence that is not in 11, skipped.
The second adds text about AOT, added.

patching file make/RunTests.gmk

AOT_MODULES is moved from the SINGLE_KEYWPORDS list
to the STRING_KEYWORDS list. This didin't apply due
to different context, resolved.

Skipped adding a line break because code does not
exist in 11.

Change in comment for ParseMicroTestSelection skipped,
not in 11.

Change in comment for ParseSpecialTestSelection 
skipped, not in 11.

Syntactic Change to $1_MICRO_BASIC_OPTIONS skipped, not in 11.
Syntactic Change to $1_MICRO_VM_OPTION skipped, not in 11.

http://cr.openjdk.java.net/~goetz/wr19/8217634-RunTest_doc-jdk11/01/
https://bugs.openjdk.java.net/browse/JDK-8217634
http://hg.openjdk.java.net/jdk/jdk/rev/650527b39f00

Best regards,
  Goetz.