Stop a next build task if executeCommand is failed
Fix ExecScriptSpec to be passed on Windows
Fix a test frozen caused by exceeding a process output buffer
Fix a ignored test case because of lack of a Spock's label
Support cygpath for GROOVYSERV_HOME and GROOVYSERV_WORK_DIR
Remove cygwin support

because current support is not enough and a whole support is very difficult and needs high cost.
Upgrade Gradle 2.0
Tweak build.gradle
Fix to build a proper binary with a proper extension for each platform
Use 386 binary even in 64-bit Windows