scons:reformat the custom boost and mapnik version checking cpp snippets, since on gcc 4.1.1 the existing formatting was causing 'no newline at end of file' warnings
scons:reformat the custom boost and mapnik version checking cpp snippets, since on gcc 4.1.1 the existing formatting was causing 'no newline at end of file' warnings

git-svn-id: 06a2cde72a096d93ff72b88e3e6711b8f00772a4@966 d397654b-2ff0-0310-9e29-ba003691a0f9

semprebon/mapnik,semprebon/mapnik,semprebon/mapnik,semprebon/mapnik,semprebon/mapnik