Split out operand descriptions.

- cdsl.operands has the Operand and OperandKind classes.

lib/cretonne/meta/cdsl/__init__.py

@@ -4,3 +4,14 @@ Cretonne DSL classes.
 This module defines the classes that are used to define Cretonne instructions
 and other entitties.
 """
+from __future__ import absolute_import
+import re
+
+
+camel_re = re.compile('(^|_)([a-z])')
+
+
+def camel_case(s):
+    # type: (str) -> str
+    """Convert the string s to CamelCase"""
+    return camel_re.sub(lambda m: m.group(2).upper(), s)