patch 9.0.0029: the bitmaps/vim.ico file is not in the distribution

Problem:    The bitmaps/vim.ico file is not in the distribution.
Solution:   Add it back to the distribution.  Adjust the build rules to have
            it end up in the right place.
diff --git a/Filelist b/Filelist
index 4dede18..202d54b 100644
--- a/Filelist
+++ b/Filelist
@@ -624,6 +624,7 @@
 		src/xpm/x86/lib-vc14/libXpm.lib \
 		src/xpm/x86/lib/libXpm.a \
 		src/xpm/x86/lib/libXpm.lib \
+		runtime/bitmaps/vim.ico \
 		nsis/icons.zip \
 
 # source files for Amiga, DOS, etc. (also in the extra archive)