[t/spec] make generate-tests.pl emit less ugly indented code.
[t/spec] make generate-tests.pl emit less ugly indented code.

Also emit warning about the code being generated, and prevent vim users from
accidentally changing the emitted code.

git-svn-id: 53605643c415f7495558be95614cf14171f1db78@28250 c213334d-75ef-0310-aa23-eaa082d1ae64

skids/roast,cygx/roast,dankogai/roast,niner/roast,b2gills/roast,dogbert17/roast,zostay/roast,cygx/roast,skids/roast,b2gills/roast,zostay/roast,perl6/roast,b2gills/roast,zostay/roast,dankogai/roast,niner/roast,skids/roast,cygx/roast,dankogai/roast,niner/roast,bitrauser/roast,bitrauser/roast,laben/roast,dogbert17/roast,laben/roast,laben/roast