Use commons-logging for bootstrap dependencies

Update main bootstrap modules to use Apache commons-logging rather than
SLF4J.

pom.xml

@@ -459,12 +459,6 @@
 				<groupId>org.springframework</groupId>
 				<artifactId>spring-core</artifactId>
 				<version>${spring.version}</version>
-                <exclusions>
-                  <exclusion>
-                    <groupId>commons-logging</groupId>
-                    <artifactId>commons-logging</artifactId>
-                  </exclusion>
-                </exclusions>
 			</dependency>
 			<dependency>
 				<groupId>org.springframework</groupId>

spring-bootstrap/pom.xml

@@ -13,10 +13,6 @@
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-core</artifactId>
 		</dependency>
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>jcl-over-slf4j</artifactId>
-		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-context</artifactId>
@@ -135,12 +131,6 @@
 			<groupId>commons-httpclient</groupId>
 			<artifactId>commons-httpclient</artifactId>
 			<scope>test</scope>
-			<exclusions>
-				<exclusion>
-					<groupId>commons-logging</groupId>
-					<artifactId>commons-logging</artifactId>
-				</exclusion>
-			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.tomcat.embed</groupId>