Replace -fshow-source-paths with -fhide-source-paths

Authored by hsyl20 on Nov 29 2016, 12:39 PM.

Description

Replace -fshow-source-paths with -fhide-source-paths

This patch reverts the change introduced with
587dcccfdfa7a319e27300a4f3885071060b1f8e and restores the previous
default output of GHC (i.e., show source path and object path for each
compiled module).

The -fhide-source-paths flag can be used to hide these paths and reduce
the line
noise.

Reviewers: gracjan, nomeata, austin, bgamari, simonmar, hvr

Reviewed By: hvr

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D2728

GHC Trac Issues: Trac #12851