Review Request JDK-8182416: Clean up module-info.java like move requires transitive adjacent to exports

[Mandy Chung]

http://cr.openjdk.java.net/~mchung/jdk9/webrevs/8182416/webrev.00/

This patch cleans up module-info.java mainly moving requires transitive
before exports, group exports/opens (packages) together and uses/provides
(services) next.

Document if a module is upgradeable.

jdeps —-generate-module-info is also updated to list requires transitive
before exports.

Mandy