INT-3091 Fix Concurrent (S)FTP Transfers

byte[] and String payloads were written to a temporary file.

If the same message is transferred to two different destinations
concurrently, one of the adapters could remove the temporary
file while the other was using it.

Don't use a temporary file for these payloads, simply use the
payload byte[] [or a String.getBytes()] as the InputStream
passed to the Session.write() method.

Polishing

Polishing - Add WARN For Missing File

+ Test

JIRA: https://jira.springsource.org/browse/INT-3091
INT-3074: JDBC: Make generateSql as UP-TO-DATE

* remove `overwrite: 'true'` from `generateSql` task
* add `cleanSql` task

JIRA: https://jira.springsource.org/browse/INT-3074
INT-3170 Update Project Repo in Root Files

s/SpringSource/spring-projects/
INT-3171: Polishing Aggregator tests

* Increase waiting timeouts
* Get rid of `Thread.sleep` when it's dangerous

JIRA: https://jira.springsource.org/browse/INT-3171
INT-2866: Add (S)FTP `local-directory-expression`

* Add `local-directory-expression` to (S)FTP Outbound Gateways
* Add `FtpServerRule` to Apache Mina embedded FtpServer
* Add tests for (M)GET and `local-directory-expression`:
FTP tests uses `FtpServerRule`, SFTP tests need testing on real SFTP server

JIRA: https://jira.springsource.org/browse/INT-2866

INT-2866: Documentation

INT-2866 Polishing

- Remove leading /
- Change \ to / in invalid test
- Clean up after sftp

Tested with real SSH.

INT-2866 Polishing - Add Mock SFTP Test

Run with -Dspring-profiles-active=realSSH to run with a real SSH server.

Assumes ftptest/ftptest account on localhost with the following directory tree in the user's root...

  $ tree sftpSource/
  sftpSource/
  ├── sftpSource1.txt
  ├── sftpSource2.txt
  └── subSftpSource
      └── subSftpSource1.txt

INT-2866: Polishing

INT-2866: change `remotePath` to `remoteDirectory`

Doc Polishing.
INT-3172 (S)FTP - Add Recursion Option to LS Cmd

When recursing, the returned filenames are relative to
the top level directory.

INT-3172 (S)FTP - Add Recursion to MGET Command

https://jira.springsource.org/browse/INT-3172

INT-3172 Polishing

- PR Comments
- Add Tests for SFTP (tested with Mock and real SSH)
- Enhance test to ensure subdir is in 3rd file retrieved
- Exclude "special" directories ('.' and '..') from recursion

INT-3172 Make FtpServerRule Safe For Concurrency

Previously the port was static.

- Make the port an instance variable
- Channel the `@ ClassRule` to a `@ Rule`
- Register an appropriate DefaultFtpSessionFactory bean declaration

INT-3172 Polishing; Docs

- Rename FtpServerRule to TestFtpServer
- Remove restriction on filters for MGET
- Add test for filtered MGET
- Reference docs, what's new

INT-3172 More Polish

- Fix type in reference
- Fix error message now that filter is allowed with MGET
- Remove test for filter with MGET (now valid)

INT-3172: Fix tests and typos

INT-3172: this.remoteFileSeparator for recursion
INT-3069 Add Global Gateway Method Metadata

https://jira.springsource.org/browse/INT-3069

Provide a mechanism to specify headers and payload-expression that can
be applied to all methods in the gateway.

- Headers defined as 'default' are globally applied to all gateway methods.
- Also supports 'default-payload-expression'.
- Headers defined on a specific method override the global settings.
- An `@Header` in the interface is overridden by a specific <header/> for that method (current behavior)
- An `@Header` in the interface is NOT overridden by a  <default-header/>
- Add 3 new SpEL variables:
-- #methodName (synonym for #method - deprecated)
-- #methodString (a string representation of the method showing return type and arg types)
-- #methodObject (the Method object)

	<int:gateway id="sampleGateway"
			service-interface="org.springframework.integration.gateway.GatewayInterfaceTests.Bar"
			default-request-channel="requestChannelBaz">
		<int:default-header name="name" expression="#methodName"/>
		<int:default-header name="string" expression="#methodString"/>
		<int:default-header name="object" expression="#methodObject"/>
		<int:method name="baz">
			<int:header name="name" value="overrideGlobal"/>
		</int:method>
	</int:gateway>

INT-3069 Polishing - PR Comments

- Remove extra 'method' variables, just provide `gatewayMethod`.
- Parser improvements
- Schema now enforces default-header elements to precede method elements
- Doc polishing
INT-3113: Use Lettuce Redis Client

* Ensure close connections after tests
* Remove `Thread.sleep` where it is possible

JIRA: https://jira.springsource.org/browse/INT-3113

INT-3113: Improve `RedisAvailableRule`

* Upgrade to Spring-Data-Redis-1.1.0
* Change Redis port to default one - 6379

Polish - add smart delay to SubscribableRedisChannelTests.pubSubChannelTest
Merge remote-tracking branch 'upstream/master' into 4.0.0-WIP

Conflicts:
	spring-integration-core/src/test/java/org/springframework/integration/aggregator/AggregatorTests.java
	spring-integration-core/src/test/java/org/springframework/integration/aggregator/ConcurrentAggregatorTests.java
	spring-integration-core/src/test/java/org/springframework/integration/aggregator/CorrelatingMessageHandlerTests.java
	spring-integration-core/src/test/java/org/springframework/integration/gateway/GatewayInterfaceTests.java
	spring-integration-redis/src/test/java/org/springframework/integration/redis/channel/SubscribableRedisChannelTests.java
	spring-integration-redis/src/test/java/org/springframework/integration/redis/config/RedisInboundChannelAdapterParserTests.java
	spring-integration-redis/src/test/java/org/springframework/integration/redis/store/DelayerHandlerRescheduleIntegrationTests.java
	spring-integration-redis/src/test/java/org/springframework/integration/redis/store/RedisMessageGroupStoreTests.java
	spring-integration-redis/src/test/java/org/springframework/integration/redis/store/RedisMessageStoreTests.java

Resolved
Fix Imports After Merge
Initial Changes for SPR 4.0.0.RC1

- MessageConverter
Remove SI GenericMessage

- Deprecate for now to ease XD migration.
Remove Generic Type From Mock Injection