tar: Support reading continguous file entries.
tar: Support reading continguous file entries.

This type of entry causes tar to allocate the file contiguously
on disk when it is extracted. For all other intents and purposes
it represents a regular file. MuPDF now treats them the same as
regular file entries.

ArtifexSoftware/mupdf,TamirEvan/mupdf,fluks/mupdf-x11-bookmarks,TamirEvan/mupdf,ArtifexSoftware/mupdf,fluks/mupdf-x11-bookmarks,sebras/mupdf,sebras/mupdf,sebras/mupdf,ccxvii/mupdf,ArtifexSoftware/mupdf,ArtifexSoftware/mupdf,ArtifexSoftware/mupdf,TamirEvan/mupdf,ccxvii/mupdf,TamirEvan/mupdf,ccxvii/mupdf,sebras/mupdf,ccxvii/mupdf,fluks/mupdf-x11-bookmarks,fluks/mupdf-x11-bookmarks,ArtifexSoftware/mupdf,sebras/mupdf,ArtifexSoftware/mupdf,TamirEvan/mupdf,fluks/mupdf-x11-bookmarks,TamirEvan/mupdf,fluks/mupdf-x11-bookmarks,fluks/mupdf-x11-bookmarks,TamirEvan/mupdf,ccxvii/mupdf,ArtifexSoftware/mupdf,sebras/mupdf,TamirEvan/mupdf,ccxvii/mupdf