Remove an unused parameter.
Whitespace changes to fit 80 columns.
Replace two unused variables with _.
Remove an unused import.
Fix compilation of "not x" and make proper support for C99 bool.
Add external program support for bools.
Merge pull request #160 from pjonsson/add-returnvalues

Fix compilation of "not x" and some general cleanup.
Revert "Add support for Char literals."

This reverts commit 86edebb448f1344b37d4f6f13d030f3baa7f9bca.

Conflicts:
	lib/Feldspar/Compiler/Backend/C/Platforms.hs
Merge pull request #161 from pjonsson/unchar

Revert "Add support for Char literals."