Prepare SDK for KLP MR1. Do not merge.

System images are in 19 rev 2 for MR1 (since they have minor.major)

platform-tools: update the API diff file that lint uses (not automated yet.)
build-tools: llvm-rs-cc issue affecting RS NDK mode in Gradle.

Note that support is set to 19.0.1 which means it will have to be
released using the new addon.xsd format that allows extras to have a
major.micro.minor format. That will be an interesting way to test this
feature.

Change-Id: Id755770f8a121edffa36e0fcb70488c452087440
Swiperefresh sample

Change-Id: Ifc5736c91e61b592a010bd212752347e141849cc
Merge "Swiperefresh sample" into klp-ub-dev
am fd2db1be: Merge "Swiperefresh sample" into klp-ub-dev

* commit 'fd2db1bef161e8bc7eda014f3924009330a9ab44':
  Swiperefresh sample
Update api-versions.xml for latest API changes

Change-Id: Id979db34a83da704df38c1250fb946baf928650b
am dff82828: Update api-versions.xml for latest API changes

* commit 'dff8282839de40f210d802556194665be79750d1':
  Update api-versions.xml for latest API changes
am 02ab4c2b: am dff82828: Update api-versions.xml for latest API changes

* commit '02ab4c2bcb9810c760759ad2fa81284688e7c0d3':
  Update api-versions.xml for latest API changes
Updating sdk.atree to reflect new set of samples

Change-Id: I1308d65f77783fc7f43fdc36bf90a59a137ec73f
am b734f1b5: Updating sdk.atree to reflect new set of samples

* commit 'b734f1b5905c0f49e2dd8d73333ac5b003e15fa9':
  Updating sdk.atree to reflect new set of samples
am f044ac48: am b734f1b5: Updating sdk.atree to reflect new set of samples

* commit 'f044ac485dd60ac075b31f81db3922b2d3780119':
  Updating sdk.atree to reflect new set of samples
Updating samples browser to include ActionBarCompat samples

Change-Id: I4bf39042db2bfef3ed538280f6fc533a7a379882
am f067a933: am 1f1e7379: Merge "MIPS hasn\'t supported SA_RESTORER since 2.5 kernels."

* commit 'f067a933f5222939711328a127fcf007cf9032c7':
  MIPS hasn't supported SA_RESTORER since 2.5 kernels.
am 3053834f: am c044b5e3: Merge "- Using hard-fp - Immersive mode in android-19 - Fixed local reference release in JNI helper - Misc fixes Change-Id: I3ab19c2b66648bb7a011c462d9d98e75bc136ce6"

* commit '3053834fdc4159afb8b276eec4fecdb7e97cf87c':
  - Using hard-fp - Immersive mode in android-19 - Fixed local reference release in JNI helper - Misc fixes Change-Id: I3ab19c2b66648bb7a011c462d9d98e75bc136ce6
am 45d19989: am 4b60b014: Merge "Switch to use elfutils 0.153"

* commit '45d1998989aab744df954a0357cf1eed7d2123b1':
  Switch to use elfutils 0.153
am 98a13468: Updating samples browser to include ActionBarCompat samples

* commit '98a13468a649288ff83fd26a80c5922cede6ec1a':
  Updating samples browser to include ActionBarCompat samples
am 3a85c6d5: am 98a13468: Updating samples browser to include ActionBarCompat samples

* commit '3a85c6d598f8575a1442278bf3733eec6c5d6a2e':
  Updating samples browser to include ActionBarCompat samples
am 7e0d5c29: am c9421a7a: Merge "make_key: add EC key generation support"

* commit '7e0d5c29b33f3056aedcb44cb8cbae808c11c35d':
  make_key: add EC key generation support
am c61dbe23: Merge commit \'8eccbd3b5d90b9f0557c9a01f49d45e98ac85a46\' into HEAD

* commit 'c61dbe23a4f2f69af9c674af3dad3759b098eae2':
am 18e10d81: am 4a09318c: Merge "Temporarily disable elftree on darwin-x86"

* commit '18e10d81e37be27229e47de9cd7870b4cd62b6c6':
  Temporarily disable elftree on darwin-x86
Sample code: bug fix

Fix for:

b/6535950

Change-Id: I8f03a2e70c72dd68b4d183a54351ad09b23b83c4