Reflect the rename of the Makrofile in Makefile.am

Commit 2b80e08 renamed 'DuneTypeTreeMacros.cmake' to
'DuneTypetreeMacros.cmake'.  Reflect this change in the list of
ditributed files created by the Autotools build system.
Reflect the rename of the Makrofile in CMakeLists.txt

    Commit 2b80e08 renamed 'DuneTypeTreeMacros.cmake' to
    'DuneTypetreeMacros.cmake'.  Reflect this change in the list of
    ditributed files created by the Autotools build system.