ptrdiff-0: Type-checked pointer diffs

Index

.*Foreign.Ptr.Diff
actForeign.Ptr.Diff
advanceForeign.Ptr.Diff
Diff 
1 (Type/Class)Foreign.Ptr.Diff
2 (Data Constructor)Foreign.Ptr.Diff
diffForeign.Ptr.Diff
DiffTorsorForeign.Ptr.Diff
getDiffForeign.Ptr.Diff
invForeign.Ptr.Diff
nextForeign.Ptr.Diff
peekDiffOffForeign.Ptr.Diff
pokeDiffOffForeign.Ptr.Diff
prevForeign.Ptr.Diff