Review request: 8154190 & 8155513: Deprivilege java.compiler and jdk.charsets

[Mandy Chung]

JDK-8154190: Deprivilege java.compiler module
Webrev:
   http://cr.openjdk.java.net/~mchung/jdk9/webrevs/8154190/webrev.00/

JDK-8155513: Deprivilege jdk.charsets module
Webrev:
  http://cr.openjdk.java.net/~mchung/jdk9/webrevs/8155513/webrev.00/

Very simple change.

These patches move java.compiler and jdk.charsets module to be defined by the platform class loader and grant with AllPermissions initially.  We could grant finer-grained permissions in the future.

Mandy