[BUG] period -N can't use with -O paramters,but use for example like 'pyarmor gen --period 1 foo.py'

[bleachyin]

hello, when i run pyarmor gen --period 1 -O -r dist/ ，提示报错说不认识period的参数，但是运行单文件是可以成功

[jondy]

请参考 #1340