Update extra-source-files list

Fixes #97
travis: install from the generated tarball
fix .travis.yml
fix .travis.yml
Move extension tests to a separate file
Rename directory: Test -> tests
Remove an outdated tested-with field
Rewrite the test suite to use golden tests
Check in golden files
Add trailing newlines to output files
gitignore .out files
test suite: find lhs files, too
Fix exactpp tests
Add missing trailing newlines to .hs examples
Update golden files (fixed by the previous commit)
Fix two exact printing tests by removing trailing whitespace from the sources
Remove failing, printFail files
Register .golden files with cabal
Move our signle unit test to golden tests
Pretty-printing golden tests