RFR: 8244947: fix ios/android build for static libs

[Johan Vos]

Add build logic for building static-libs-image for ios and android

Fix for JDK-8244947

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Commit messages:
 - Add build logic for building static-libs-image for ios and android

Changes: https://git.openjdk.java.net/mobile/pull/4/files
 Webrev: https://webrevs.openjdk.java.net/mobile/4/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8244947
  Stats: 154 lines in 17 files changed: 134 ins; 0 del; 20 mod
  Patch: https://git.openjdk.java.net/mobile/pull/4.diff
  Fetch: git fetch https://git.openjdk.java.net/mobile pull/4/head:pull/4

PR: https://git.openjdk.java.net/mobile/pull/4