[8u] approval request for 8027137, 8087292 and 8130888

[Sundararajan Athijegannathan]

Please approve the backport of the following fixes:

Bugs:

https://bugs.openjdk.java.net/browse/JDK-8027137
https://bugs.openjdk.java.net/browse/JDK-8087292
https://bugs.openjdk.java.net/browse/JDK-8130888

jdk9 review threads:

http://mail.openjdk.java.net/pipermail/nashorn-dev/2015-September/005166.html
http://mail.openjdk.java.net/pipermail/nashorn-dev/2015-September/005144.html
http://mail.openjdk.java.net/pipermail/nashorn-dev/2015-July/004914.html

jdk8u webrev:

http://cr.openjdk.java.net/~sundar/8027137_8087292_8130888/8u/webrev.00/

Mostly backported "as is" except for modular layout difference and one 
manual diff applied on ScriptClassInfoCollector.java as diffs on that 
class won't apply automatically (due to another ASM version fix changes 
- which is not backported to jdk8u - as that is not applicable to 8u).

http://cr.openjdk.java.net/~sundar/8027137_8087292_8130888/8u/webrev.00/buildtools/nasgen/src/jdk/nashorn/internal/tools/nasgen/ScriptClassInfoCollector.java.udiff.html

CC'ing nashorn team as well.

Thanks,
-Sundar