Verified Commit eb252537 authored by
Move win32 package build details to mingw/README.md
In theory `mingw/Makefile` can build a binary release, but it doensn't quite works and omits some niceties, so we still need the detailed build instructions to compare with. However, the details aren't relevent to the general release checklist, so pretend `make -C ming package` works at that level. Also convert the mingw README to markdown for better display on hosting sites.