style: expand tabs to spaces to fix warnings

Use spaces rather than tabulations to fix ghc warnings.
Remove trailing whitspaces.

* src/Annotation.hs,
* src/Code.hs,
* src/Config.hs.in,
* src/Cpu.hs,
* src/Eval.hs,
* src/High.hs,
* src/Ir.hs,
* src/Level.hs,
* src/Location.hs,
* src/Main.hs,
* src/Memory.hs,
* src/Opt.hs,
* src/Parse.hs,
* src/Plain.hs,
* src/Position.hs,
* src/Preload.hs,
* src/Profile.hs,
* src/Report.hs,
* src/Result.hs,
* src/Runtime.hs,
* src/RuntimeChar.hs,
* src/RuntimePrint.hs,
* src/RuntimeString.hs,
* src/RuntimeSystem.hs,
* src/Scan.hs,
* src/Token.hs,
* src/Trace.hs,
* src/VMMonad.hs,
* src/local.am: here.
2 jobs for mj/style
Status Job ID Name Coverage
  Test
passed #18859
debian-stable-gcc

00:02:31

failed #9156
debian-stable-gcc