[ci] Fix and re-enable mingw-w64 builds
treeeed5129e4d03bccf8119f0bea1ddcdbcfe1cd651
-rw-r--r-- 7481 .appveyor.yml
drwxr-xr-x - .github
-rw-r--r-- 109 .gitignore
-rw-r--r-- 1082 README
-rw-r--r-- 1833 Vagrantfile
-rwxr-xr-x 30514 bootstrap
drwxr-xr-x - config
drwxr-xr-x - patches
drwxr-xr-x - xapian-applications
drwxr-xr-x - xapian-bindings
drwxr-xr-x - xapian-core
drwxr-xr-x - xapian-data
drwxr-xr-x - xapian-letor
drwxr-xr-x - xapian-maintainer-tools