Moved initialization of Ruby level instance variables to *after* the program has been loaded into the zmachine struct.  Added machine_read_string_array function to turn an array of zscii chars into a ruby String.
Moved initialization of Ruby level instance variables to *after* the program
has been loaded into the zmachine struct.  Added machine_read_string_array
function to turn an array of zscii chars into a ruby String.

eki/dorothy,eki/dorothy,eki/dorothy