RFR: 8190287: Update JDK's internal ASM to ASMv6

[Kumar Srinivasan]

Hello Remi, Sundar and others,

Please review the webrev [1] to update JDK's internal ASM to v6.

To help with review areas, you can use the browser to search for mq 
patches commented with //

Highlights of changes:
1. updated ASMv6 // jdk-new-asmv6.patch
2. changes to jlink and jar to add ModuleMainClass and ModulePackages 
attributes //jdk-new-asm-update.patch
3. adjustments to jdk tests  //jdk-new-asm-test.patch
4. minor adjustments  to hotspot tests  //jdk-new-hotspot-test.patch

Tests:
jdk_tier1, jdk_tier2, testset hotspot, hotspot_tier1, nashorn ant tests,
Alan has also run several tests.

Big thanks to Alan for #2 and #3 as part of [3].

Thanks
Kumar

[1] http://cr.openjdk.java.net/~ksrini/8190287/webrev.00/index.html
[2] https://bugs.openjdk.java.net/browse/JDK-8190287
[3] https://bugs.openjdk.java.net/browse/JDK-8186236