On Mysys Bash if you changed that line to do a "pwd -W" it gets rid of the following warning:
Unable to read the logging configuration from 'file:/c/Users/tom/projects/jbosstm/narayana/jboss-as/build/target/wildfly-9.0.0.Alpha2-SNAPSHOT/standalone/configuration/logging.properties' (java.io.FileNotFoundException: \c\Users\tom\projects\jbosstm\narayana\jboss-as\build\target\wildfly-9.0.0.Alpha2-SNAPSHOT\standalone\configuration\logging.properties (The system cannot find the path specified))
I can raise a PR on WildFly Core but I just wanted to make sure it was something that you would be interested in merging (i.e. support for that development environment). I would put it conditional on the uname of MINGW as not all implementations of pwd will support -W of course.