Possible bug in ports installer

[Scott Haneda]

2.4.1. The Postflight Script in the docs

In a test case, I had ~/.profile, it was not changed to mpsaved_ 
$timestamp nor was it edited

In a second test case, I had no ~/.profile, it was not created.

Adding the path and the manpath certainly fixes the issue, but the  
docs seem to either be wrong, or the ports installer is not doing what  
it is supposed to.
--
Scott
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