Add the tests used to bring the System V struct passing/returning fun…

…ctionality.

There are:
1. Tests for passing managed struct.\
2. Tests for returning managed structs.
3. Tests for PInvoke and reverse PInvoke using callbacks and native SO.

tests/src/JIT/Methodical/structs/systemvbringup/CMakeLists.txt

@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 2.6)
+project(jitstructtests)
+
+set(CMAKE_SHARED_LIBRARY_PREFIX "")
+
+set(SOURCES structinregs.cpp structinregs.def)
+add_library(jitstructtests_lib SHARED ${SOURCES})
+
+# add the install targets (this "installs" the native file on Windows systems)
+install(TARGETS jitstructtests_lib DESTINATION bin)
+
+# This "installs" the native file on System V systems
+set_target_properties(jitstructtests_lib PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/structinregs)

tests/src/JIT/Methodical/structs/systemvbringup/project.json

@@ -0,0 +1,10 @@
+{
+  "dependencies": {
+    "System.Runtime": "4.0.20-beta-23302",
+    "System.Runtime.InteropServices": "4.0.20-beta-23302",
+    "System.Console": "4.0.0-beta-23302",
+  },
+  "frameworks": {
+    "dnxcore50": {}
+  }
+}