Here's an updated report that will combine arches. Thanks, Kalev.
------------------------------------------
MinGW/native package version discrepancies
------------------------------------------
Fedora N Matches Found: 50
Fedora Rawhide Matches Found: 51
+-------------------------------+
| f18 | rawhide |
+-----------------------+---------------+---------------+
| atk | 2.5.91 | 2.6.0 |
| mingw-atk | 2.5.4 | 2.5.4 |
+-----------------------+---------------+---------------+
| binutils | 2.23.51.0.1 | 2.23.51.0.2 |
| mingw-binutils | 2.22.52.0.4 | 2.22.52.0.4 |
+-----------------------+---------------+---------------+
| boost | 1.50.0 | 1.50.0 |
| mingw-boost | 1.48.0 | 1.48.0 |
+-----------------------+---------------+---------------+
| cairo | 1.12.2 | 1.12.2 |
| mingw-cairo | 1.10.2 | 1.10.2 |
+-----------------------+---------------+---------------+
| curl | 7.27.0 | 7.27.0 |
| mingw-curl | 7.25.0 | 7.25.0 |
+-----------------------+---------------+---------------+
| dbus | 1.6.0 | 1.6.0 |
| mingw-dbus | 1.6.4 | 1.6.4 |
+-----------------------+---------------+---------------+
| fontconfig | 2.10.1 | 2.10.1 |
| mingw-fontconfig | 2.9.0 | 2.9.0 |
+-----------------------+---------------+---------------+
| freetype | 2.4.10 | 2.4.10 |
| mingw-freetype | 2.4.8 | 2.4.8 |
+-----------------------+---------------+---------------+
| gdbm | 1.10 | 1.10 |
| mingw-gdbm | 1.8.0 | 1.8.0 |
+-----------------------+---------------+---------------+
| glib-networking | 2.33.14 | 2.34.0 |
| mingw-glib-networking | 2.32.1 | 2.32.1 |
+-----------------------+---------------+---------------+
| glib2 | 2.33.14 | 2.34.0 |
| mingw-glib2 | 2.33.10 | 2.33.10 |
+-----------------------+---------------+---------------+
| glibmm24 | 2.33.3 | 2.33.13 |
| mingw-glibmm24 | 2.32.1 | 2.32.1 |
+-----------------------+---------------+---------------+
| gtk2 | 2.24.12 | 2.24.13 |
| mingw-gtk2 | 2.24.11 | 2.24.12 |
+-----------------------+---------------+---------------+
| gtk3 | 3.5.18 | 3.6.0 |
| mingw-gtk3 | 3.5.12 | 3.5.12 |
+-----------------------+---------------+---------------+
| gtkhtml3 | 4.5.91 | 4.5.91 |
| mingw-gtkhtml3 | 4.4.0 | 4.4.0 |
+-----------------------+---------------+---------------+
| gtkmm30 | 3.5.6 | 3.5.13 |
| mingw-gtkmm30 | 3.4.0 | 3.4.0 |
+-----------------------+---------------+---------------+
| gtksourceview3 | 3.5.4 | 3.6.0 |
| mingw-gtksourceview3 | 3.4.1 | 3.4.1 |
+-----------------------+---------------+---------------+
| harfbuzz | 0.9.4 | 0.9.4 |
| mingw-harfbuzz | 0.9.3 | 0.9.3 |
+-----------------------+---------------+---------------+
| icu | 49.1.1 | 49.1.1 |
| mingw-icu | 4.8.1.1 | 4.8.1.1 |
+-----------------------+---------------+---------------+
| libffi | 3.0.10 | 3.0.10 |
| mingw-libffi | 3.0.11 | 3.0.11 |
+-----------------------+---------------+---------------+
| libgeotiff | 1.2.5 | 1.2.5 |
| mingw-libgeotiff | 1.3.0 | 1.3.0 |
+-----------------------+---------------+---------------+
| libjpeg-turbo | 1.2.1 | 1.2.1 |
| mingw-libjpeg-turbo | 1.1.1 | 1.1.1 |
+-----------------------+---------------+---------------+
| libpng | 1.5.12 | 1.5.13 |
| mingw-libpng | 1.5.7 | 1.5.7 |
+-----------------------+---------------+---------------+
| libsigc++20 | | 2.2.11 |
| mingw-libsigc++20 | | 2.2.10 |
+-----------------------+---------------+---------------+
| libsigsegv | 2.10 | 2.10 |
| mingw-libsigsegv | 2.6 | 2.6 |
+-----------------------+---------------+---------------+
| libsoup | 2.39.92 | 2.40.0 |
| mingw-libsoup | 2.38.1 | 2.38.1 |
+-----------------------+---------------+---------------+
| libssh2 | 1.4.2 | 1.4.2 |
| mingw-libssh2 | 1.1 | 1.1 |
+-----------------------+---------------+---------------+
| libtasn1 | 2.13 | 2.13 |
| mingw-libtasn1 | 2.12 | 2.12 |
+-----------------------+---------------+---------------+
| libusbx | | 1.0.14 |
| mingw-libusbx | | 1.0.11 |
+-----------------------+---------------+---------------+
| libvirt | 0.10.2 | 0.10.2 |
| mingw-libvirt | 0.9.11 | 0.9.11 |
+-----------------------+---------------+---------------+
| libvorbis | 1.3.3 | 1.3.3 |
| mingw-libvorbis | 1.3.2 | 1.3.2 |
+-----------------------+---------------+---------------+
| libzip | 0.10.1 | 0.10.1 |
| mingw-libzip | 0.9 | 0.9 |
+-----------------------+---------------+---------------+
| llvm | 3.1 | 3.1 |
| mingw-llvm | 3.0 | 3.0 |
+-----------------------+---------------+---------------+
| matahari | 0.6.0 | 0.6.0 |
| mingw-matahari | 0.5.0 | 0.5.0 |
+-----------------------+---------------+---------------+
| openjpeg | 1.5.0 | 1.5.1 |
| mingw-openjpeg | 1.3 | 1.3 |
+-----------------------+---------------+---------------+
| openssl | 1.0.1c | 1.0.1c |
| mingw-openssl | 1.0.0d | 1.0.0d |
+-----------------------+---------------+---------------+
| p11-kit | 0.14 | 0.14 |
| mingw-p11-kit | 0.13 | 0.13 |
+-----------------------+---------------+---------------+
| pango | 1.31.2 | 1.32.1 |
| mingw-pango | 1.31.0 | 1.31.0 |
+-----------------------+---------------+---------------+
| pcre | 8.31 | 8.31 |
| mingw-pcre | 8.30 | 8.30 |
+-----------------------+---------------+---------------+
| pixman | 0.26.2 | 0.27.2 |
| mingw-pixman | 0.24.4 | 0.24.4 |
+-----------------------+---------------+---------------+
| proj | 4.8.0 | 4.8.0 |
| mingw-proj | 4.6.1 | 4.6.1 |
+-----------------------+---------------+---------------+
| qpid-cpp | 0.18 | 0.18 |
| mingw-qpid-cpp | 0.14 | 0.14 |
+-----------------------+---------------+---------------+
| readline | 6.2 | 6.2 |
| mingw-readline | 5.2 | 5.2 |
+-----------------------+---------------+---------------+
| spice-gtk | 0.14 | 0.14 |
| mingw-spice-gtk | 0.12 | 0.12 |
+-----------------------+---------------+---------------+
| spice-protocol | 0.12.1 | 0.12.2 |
| mingw-spice-protocol | 0.8.0 | 0.8.0 |
+-----------------------+---------------+---------------+
| sqlite | 3.7.13 | 3.7.13 |
| mingw-sqlite | 3.7.9 | 3.7.9 |
+-----------------------+---------------+---------------+
| tcl | 8.5.12 | 8.5.12 |
| mingw-tcl | 8.5.11 | 8.5.11 |
+-----------------------+---------------+---------------+
| tk | 8.5.12 | 8.5.12 |
| mingw-tk | 8.5.9 | 8.5.9 |
+-----------------------+---------------+---------------+
| webkitgtk | | 1.10.0 |
| mingw-webkitgtk | | 1.8.3 |
+-----------------------+---------------+---------------+
| webkitgtk3 | 1.9.92 | 1.10.0 |
| mingw-webkitgtk3 | 1.8.3 | 1.8.3 |
+-----------------------+---------------+---------------+
| zlib | 1.2.7 | 1.2.7 |
| mingw-zlib | 1.2.5 | 1.2.5 |
+-----------------------+---------------+---------------+