Updated runtime files.
diff --git a/runtime/spell/spell.vim b/runtime/spell/spell.vim
new file mode 100644
index 0000000..375b088
--- /dev/null
+++ b/runtime/spell/spell.vim
@@ -0,0 +1,4 @@
+" Settings for when generating spellfiles.
+"
+" Assume we have 2 Gbyte RAM available.
+set mkspellmem=1800000,6000,1600