RFR: 8255240: Mobile builds need to exclude some modules [v3]

[Johan Vos]

> This PR enables to build the static libs for ios/android for the native code in most of the modules. 
> It also adds GA scripts to build those libs on Android and iOS.
> Note that building hotspot is disabled by this PR.

Johan Vos has updated the pull request incrementally with one additional commit since the last revision:

  re-enable gensrc for X11 on Android
  fix whitespace issue

-------------

Changes:
  - all: https://git.openjdk.org/mobile/pull/20/files
  - new: https://git.openjdk.org/mobile/pull/20/files/9f14ed67..42bcaf36

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=mobile&pr=20&range=02
 - incr: https://webrevs.openjdk.org/?repo=mobile&pr=20&range=01-02

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/mobile/pull/20.diff
  Fetch: git fetch https://git.openjdk.org/mobile.git pull/20/head:pull/20

PR: https://git.openjdk.org/mobile/pull/20