GitLab

This removes some duplication from the testsuite driver

The remaining validation test failures on the stable branch will be
fixed by pending merged.

- need to test :browse! in different contexts
- -s has disappeared, see #1799 for sorting
- 'imported from' clarified to 'imported via'

- as ghc 6.9 flags are beginning to diverge, we need
  a simpler way of specifying version-specific flags
  or settings: have two entirely separate sections,
  instead of one section with too many patches.

  even if that doubles the script size, it should
  be easier to edit. also add a warning that 
  ghci024.stdout is a generated file.

- default for -fprint-bind-result has changed

- -fno-ignore-breakpoints is gone

- -fprint-bind-contents is new

 
 - for unregisterised platforms, default is '-fno-asm-mangling'
 - powerpc_apple_darwin fails on ':set -package ghc' (#1845)
 - for ghc 6.8, -fno-run-cps and -fno-convert-to-zipper-and-back
   do not exist