Fix MANIFEST.SKIP or use an authoring tool which respects MANIFEST.SKIP. Note that each entry in MANIFEST.SKIP is a regular expression. You may need to add appropriate meta characters not to ignore necessary stuff.
Error: JPEG/jpeg/cjpeg.1,JPEG/jpeg/cjpeg.c,JPEG/jpeg/djpeg.1,JPEG/jpeg/djpeg.c,JPEG/jpeg/jpegtran.1,JPEG/jpeg/jpegtran.c,JPEG/jpeg/rdjpgcom.1,JPEG/jpeg/rdjpgcom.c,JPEG/jpeg/wrjpgcom.1,JPEG/jpeg/wrjpgcom.c,PNG/zlib/contrib/blast/Makefile,PNG/zlib/contrib/minizip/Makefile,PNG/zlib/contrib/puff/Makefile,PNG/zlib/contrib/untgz/Makefile
Add 'use strict' (or its equivalents) to all modules, or convince us that your favorite module is well-known enough and people can easily see the modules are strictly written.
Error: Extensions::ImageBack::ImageBack, PreLoad, Tk::After, Tk::Animation, Tk::Bitmap, Tk::Canvas, Tk::Checkbutton, Tk::Compound, Tk::Configure, Tk::DragDrop::SunConst, Tk::DragDrop::Win32Drop, Tk::DummyEncode, Tk::English, Tk::Event, Tk::HList, Tk::Image, Tk::InputO, Tk::ItemStyle, Tk::JPEG, Tk::LabEntry, Tk::LabFrame, Tk::LabRadiobutton, Tk::Label, Tk::Menubutton, Tk::Mwm, Tk::NBFrame, Tk::PNG, Tk::Photo, Tk::Pixmap, Tk::Pretty, Tk::ROText, Tk::Radiobutton, Tk::Reindex, Tk::Scale, Tk::Scrollbar, Tk::Stats, Tk::Submethods, Tk::Text::Tag, Tk::TextEdit, Tk::TextUndo, Tk::Tiler, Tk::Toplevel, Tk::WinPhoto, Tk::Xlib, Tk::Xrm, Tk::install, Tk::widgets