Review Request: Moved proc::alive function to os::alive in os.hpp and improved its documentation. (libstout)

[Jiang Yan Xu]

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https://reviews.apache.org/r/11553/
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Review request for mesos, Benjamin Hindman, Vinod Kone, and Ben Mahler.


Description
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Rebased against master. Previous review received "shipit"s but got lost.


Diffs
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  3rdparty/libprocess/3rdparty/stout/include/stout/os.hpp 
1b3fb47d7567b5467fef2a2bb15d5c4a2ea42aa5 

Diff: https://reviews.apache.org/r/11553/diff/


Testing
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make check.


Thanks,

Jiang Yan Xu