Fix various typos

Fix a variety of typos throughout the project, primarily in
comments (javadoc or otherwise) but also in a handful of log messages
and a couple exception messages.

ISSUE: SPR-11123

spring-beans/src/main/java/org/springframework/beans/factory/xml/NamespaceHandler.java

@@ -36,7 +36,7 @@ import org.springframework.beans.factory.config.BeanDefinitionHolder;
  * it encounters a custom tag directly under a {@code <bean>} tag.
  *
  * <p>Developers writing their own custom element extensions typically will
- * not implement this interface drectly, but rather make use of the provided
+ * not implement this interface directly, but rather make use of the provided
  * {@link NamespaceHandlerSupport} class.
  *
  * @author Rob Harrop