Add support for CloudABI running on 32-bit ARM systems.
diff --git a/src/cloudabi/arm.rs b/src/cloudabi/arm.rs
new file mode 100644
index 0000000..eca5360
--- /dev/null
+++ b/src/cloudabi/arm.rs
@@ -0,0 +1,4 @@
+pub type c_char = u8;
+pub type c_long = i32;
+pub type c_ulong = u32;
+pub type wchar_t = u32;