Add python script to update sample code in docs based upon test cases.
Add python script to update sample code in docs based upon test cases.

Tested: Ran on Math Library documentation files.

Change-Id: I44810d693c3b5bbad899c616d5a37323a667360c

google/fplutil,google/fplutil,google/fplutil,google/fplutil,google/fplutil,google/fplutil