[Wasm] Add Wasm IR

Intended to be used by Kotlin/Wasm compiler.

Includes:
 * IR tree: declarations, instructions, types.
 * Convertors: ir2text, ir2bin, bin2ir
 * Spec tests, to test convertors against reference Wabt tool

license/README.md

@@ -92,6 +92,11 @@ the Kotlin IntelliJ IDEA plugin:
  - Path: idea/idea-gradle-tooling-api/src/org/gradle/tooling/model/kotlin/dsl
        - License: Apache 2 ([license/third_party/gradle_license.txt][gradle])
        - Origin: Gradle, Copyright 2002-2017 Gradle, Inc.
+       
+ - Path: wasm/ir/src/org/jetbrains/kotlin/wasm/ir/convertors
+      - License: MIT ([license/third_party/asmble_license.txt][asmble])
+      - Origin: Copyright (C) 2018 Chad Retz
+      
 
 ## Kotlin Test Data
 
@@ -220,6 +225,7 @@ any distributions of the compiler, libraries or plugin:
 
 [aosp]: third_party/aosp_license.txt
 [asm]: third_party/asm_license.txt
+[asmble]: third_party/asmble_license.txt
 [boost]: third_party/boost_LICENSE.txt
 [closure-compiler]: third_party/closure-compiler_LICENSE.txt
 [dagger]: third_party/testdata/dagger_license.txt

license/third_party/asmble_license.txt

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 Chad Retz
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.