[PATCH] lang/python27 -- Fix namespace collision

[Steve Kargl]

Both IEEE-754 2008 and ISO/IEC TS 18661-4 define the half-cycle
trignometric functions cospi, sinpi, and tanpi.  When libm (aka
math.h) grows support for sinpi(x), lang/python27 has a namespace
collision.  The attached patch fixes the problem.

-- 
Steve
20170425 https://www.youtube.com/watch?v=VWUpyCsUKR4
20161221 https://www.youtube.com/watch?v=IbCHE-hONow