Add new command line option -semihosting-arg. It is used for passing
input arguments to the guest in semihosting mode. The option can be used
multiple times. If n arguments are passed, then argument count
(semihosting_argc) will be equal to n+1 as semihosting_argv[0] points at
the program
Add new command line option -semihosting-arg. It is used for passing input
arguments to the guest in semihosting mode. The option can be used multiple
times. If n arguments are passed, then argument count (semihosting_argc) will
be equal to n+1 as semihosting_argv[0] points at the program name.
