dist-clean won't delete log files

[Dan Smith]

My understanding is that given a properly configured 'dist-clean' will behave as noted:

rm -r build
sh configure
make dist-clean
find build -mindepth 1
# no output

However, instead I get 3 files:
build/macosx-x86_64-normal-server-release
build/macosx-x86_64-normal-server-release/build.log
build/macosx-x86_64-normal-server-release/configure.log

Probably just a matter of tweaking the list of files that dist-clean will delete?

—Dan