RFR: 8238285: Lanai: java/awt/image/DrawImage tests fail

[Denis Konoplev]

Fixed sw to surface blit with swizzle

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Commit messages:
 - 8238285: Lanai: Refactor swizzleKernel
 - 8238285: Lanai: Fix IntRgbx & IntBgrx
 - 8238285: Lanai: java/awt/image/DrawImage tests fail

Changes: https://git.openjdk.java.net/lanai/pull/132/files
 Webrev: https://webrevs.openjdk.java.net/?repo=lanai&pr=132&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8238285
  Stats: 223 lines in 2 files changed: 66 ins; 114 del; 43 mod
  Patch: https://git.openjdk.java.net/lanai/pull/132.diff
  Fetch: git fetch https://git.openjdk.java.net/lanai pull/132/head:pull/132

PR: https://git.openjdk.java.net/lanai/pull/132