stijn bada8c9231 windows: Update build instructions in README.
Make the instructions more complete by documenting all needed steps for
starting from scratch.  Also add a section for MSYS2 since the Travis build
uses it as well and it's a good alternative for Cygwin.  Remove the mingw32
reference since it's not readily available anymore in most Linux distros
nor compiles successfully.
2020-09-23 22:22:13 +10:00
..