Get rid of javax.servlet API dependency for core org.eclipse.jgit

Change-Id: I57d5d4fab7e0b1bd4cf5f1850e8569c8ac5def88
Signed-off-by: Marc Strapetz <marc.strapetz@syntevo.com>
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>

org.eclipse.jgit/BUCK

@@ -9,7 +9,6 @@ java_library(
     '//lib:javaewah',
     '//lib:jsch',
     '//lib:httpcomponents',
-    '//lib:servlet-api',
     '//lib:slf4j-api',
   ],
   visibility = ['PUBLIC'],

org.eclipse.jgit/META-INF/MANIFEST.MF

@@ -140,7 +140,6 @@ Import-Package: com.googlecode.javaewah;version="[1.1.6,2.0.0)",
  com.jcraft.jsch;version="[0.1.37,0.2.0)",
  javax.crypto,
  javax.net.ssl,
- javax.servlet.http;version="[2.5.0,3.2.0)",
  org.slf4j;version="[1.7.0,2.0.0)",
  org.xml.sax,
  org.xml.sax.helpers

org.eclipse.jgit/pom.xml

@@ -89,11 +89,6 @@
       <artifactId>slf4j-api</artifactId>
     </dependency>
 
-    <dependency>
-      <groupId>javax.servlet</groupId>
-      <artifactId>javax.servlet-api</artifactId>
-      <scope>provided</scope>
-    </dependency>
   </dependencies>
 
   <build>

org.eclipse.jgit/src/org/eclipse/jgit/transport/ServiceMayNotContinueException.java

@@ -45,8 +45,6 @@ package org.eclipse.jgit.transport;
 
 import java.io.IOException;
 
-import javax.servlet.http.HttpServletResponse;
-
 import org.eclipse.jgit.internal.JGitText;
 
 /**
@@ -55,6 +53,7 @@ import org.eclipse.jgit.internal.JGitText;
  * @since 2.0
  */
 public class ServiceMayNotContinueException extends IOException {
+	private static final int FORBIDDEN = 403;
 	private static final long serialVersionUID = 1L;
 
 	private final int statusCode;
@@ -63,7 +62,7 @@ public class ServiceMayNotContinueException extends IOException {
 	/** Initialize with no message. */
 	public ServiceMayNotContinueException() {
 		// Do not set a message.
-		statusCode = HttpServletResponse.SC_FORBIDDEN;
+		statusCode = FORBIDDEN;
 	}
 
 	/**
@@ -73,7 +72,7 @@ public class ServiceMayNotContinueException extends IOException {
 	 */
 	public ServiceMayNotContinueException(String msg) {
 		super(msg);
-		statusCode = HttpServletResponse.SC_FORBIDDEN;
+		statusCode = FORBIDDEN;
 	}
 
 	/**
@@ -99,7 +98,7 @@ public class ServiceMayNotContinueException extends IOException {
 	 */
 	public ServiceMayNotContinueException(String msg, Throwable cause) {
 		super(msg, cause);
-		statusCode = HttpServletResponse.SC_FORBIDDEN;
+		statusCode = FORBIDDEN;
 	}
 
 	/**