Removed "all" rule so cr2hdr isn't built automatically when compiling a platform.
Created originally on Bitbucket by daniel_fort (Daniel Fort)
Was already merged in Bitbucket before import, marked as merged by the import user
Changed Makefile.cr2hdr so that compiling it works the same as the other command line tools, mlv_dump and raw2dng. Also: Updated exiftool to version 10.33.
@a1ex thanks for the tip on making a clean PR.