With this CL the wasm-code-fuzzer first decodes and interprets the test
case generated by the fuzzer. It then compiles the test case, but only
executes the compiled instance if the interpretation of the test case
was successful. If the compiled instance is executed, then the result of
the execution is compared with the result of the interpretation.

Additionally this CL refactors the CompileAndRunWasmModule function in
wasm-module.cc to resuse code in the call to the interpreter.

R=titzer@chromium.org

Review-Url: https://codereview.chromium.org/2321443002
Cr-Commit-Position: refs/heads/master@{#39351}