domain.sh fails to start processes in cygwin

The problem is file system paths. The boot java process is started correctly from the domain.sh using JAVA path.
The same JAVA path is passed as a command line argument (jvm and default-jvm) to start other java processes from the running JVM.
Those attempts will fail with an invalid path error.
So, in case of cygwin, the values for jvm and default-jvm have to translated into the absolute paths.

Note, this can't be done to the JAVA path that starts the original JVM, it'll fail to start.