'Step until next \'j*\' instruction in specific memory range
Usage:
MYNAME [keyword] [mapname1,mapname2]'

def nextjmp(self, *arg):

    (keyword, mapname) = normalize_argv(arg, 2)
    if keyword:
        self.stepuntil(('j.*%s' % keyword), mapname)
    else:
        self.stepuntil('j', mapname)
    return
