add SQL for filtering original files by repository
add repository DAO method for filtering files by repository
add API method for setting files' checksum
genericize Executor.Work

would be nice to do in general with Executor but that's a larger job
implement new repository method
test new repository method
add API documentation note about checking existing hashes
remove executor from managed repository
move worker creators into repository DAO methods
Merge remote-tracking branch 'remotes/origin/develop' into trac-10766-change-hasher
make code slightly clearer
remove accidental imports
add repository method for verifying file checksums
add warning to docs about setting files' checksum algorithm
FindIce: Remove unnecessary CMAKE_SIZEOF_VOID_P checks
FindIce: Simplify and make Ice checks generic
FindIce: Add Ice_ prefix to executables
cmake : Use Ice_ prefix for executables
FindIce: Use Ice_ prefix for directories
FindIce: Use components