Remote test execution for cross compiled tests. Run it like:

$ ./gradlew backend.native:tests:run \
    -Premote=user@111.22.33.444 -Ptest_target=raspberrypi

The new gradle command line options:

    -Pbuild_flags  renamed -Pkonanc_flags.
    -Ptest_flags   provides compiler flags to the test builds.
    -Ptest_target  properly sets up compiler as well as interop
                   to cross compile tests.
    -Premote       specifies remote host and login.

gradle.properties

@@ -1,6 +1,7 @@
 kotlin_version=1.1.0
 llvmVersion = 3.9.0
 minMacOsVersion = 10.10
+remoteRoot=konan_tests
 #kotlinCompilerModule=org.jetbrains.kotlin:kotlin-compiler:1.1-SNAPSHOT
 # Download artifacts of https://teamcity.jetbrains.com/viewType.html?buildTypeId=bt345
 testDataVersion=1009012:id