[issue28273] Make os.waitpid() option parameter optional.

[Jaysinh shukla]

Jaysinh shukla added the comment:

Removing the `options` default argument from all the call to os.waitpid.

Note: This patch is based on [this patch](http://bugs.python.org/file44822/os_waitpid-optional_options.diff) submitted by StyXman.

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nosy: +jaysinh.shukla
Added file: http://bugs.python.org/file44915/os_waitpid_updated_codebase_jaysinh.diff

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