Request for reviews (XS): 6873799 and 6873800

[Vladimir Kozlov]

I think EA and COOP are stable enough to enable them
by default in HS17. I will do separate pushes to have
separate build bundles.

http://cr.openjdk.java.net/~kvn/6873799/webrev.00
http://cr.openjdk.java.net/~kvn/6873800/webrev.00

Fixed 6873799: enable escape analysis by default
Fixed 6873800: enable compressed oops by default

Reviewed by:

Fix verified (y/n): y, JPRT JDK bootstrap build with both flags enabled

Other testing:
JPRT, CTW, Nightly testing with EA and COOP