This commit updates URLs to prefer the https protocol. Redirects are not followed to avoid accidentally expanding intentionally shortened URLs (i.e. if using a URL shortener).

# HTTP URLs that Could Not Be Fixed
These URLs were unable to be fixed. Please review them to see if they can be manually resolved.

* http://spring-roo-repository.springsource.org/release (404) could not be migrated:
   ([https](https://spring-roo-repository.springsource.org/release) result SSLHandshakeException).

# Fixed URLs

## Fixed But Review Recommended
These URLs were fixed, but the https status was not OK. However, the https status was the same as the http request or http redirected to an https URL, so they were migrated. Your review is recommended.

* http://maven.springframework.org/release (ReadTimeoutException) migrated to:
  https://maven.springframework.org/release ([https](https://maven.springframework.org/release) result ReadTimeoutException).
* http://maven.springframework.org/snapshot (ReadTimeoutException) migrated to:
  https://maven.springframework.org/snapshot ([https](https://maven.springframework.org/snapshot) result ReadTimeoutException).

## Fixed Success
These URLs were switched to an https URL with a 2xx status. While the status was successful, your review is still recommended.

* http://maven.apache.org migrated to:
  https://maven.apache.org ([https](https://maven.apache.org) result 200).
* http://www.apache.org/licenses/LICENSE-2.0.txt migrated to:
  https://www.apache.org/licenses/LICENSE-2.0.txt ([https](https://www.apache.org/licenses/LICENSE-2.0.txt) result 200).
* http://repo.springsource.org migrated to:
  https://repo.springsource.org ([https](https://repo.springsource.org) result 301).
* http://repo.springsource.org/libs-milestone migrated to:
  https://repo.springsource.org/libs-milestone ([https](https://repo.springsource.org/libs-milestone) result 301).
* http://repo.springsource.org/plugins-release migrated to:
  https://repo.springsource.org/plugins-release ([https](https://repo.springsource.org/plugins-release) result 301).
* http://services.gradle.org/distributions-snapshots/gradle-1.0-rc-1-20120409112701+0200-bin.zip migrated to:
  https://services.gradle.org/distributions-snapshots/gradle-1.0-rc-1-20120409112701+0200-bin.zip ([https](https://services.gradle.org/distributions-snapshots/gradle-1.0-rc-1-20120409112701+0200-bin.zip) result 301).
* http://springsource.org migrated to:
  https://springsource.org ([https](https://springsource.org) result 301).
* http://www.gradle.org/docs/current/dsl/org.gradle.api.artifacts.ConfigurationContainer.html migrated to:
  https://www.gradle.org/docs/current/dsl/org.gradle.api.artifacts.ConfigurationContainer.html ([https](https://www.gradle.org/docs/current/dsl/org.gradle.api.artifacts.ConfigurationContainer.html) result 301).
* http://www.gradle.org/docs/current/userguide/dependency_management.html migrated to:
  https://www.gradle.org/docs/current/userguide/dependency_management.html ([https](https://www.gradle.org/docs/current/userguide/dependency_management.html) result 301).
* http://repo.maven.apache.org/maven2 migrated to:
  https://repo.maven.apache.org/maven2 ([https](https://repo.maven.apache.org/maven2) result 302).

# Ignored
These URLs were intentionally ignored.

* http://maven.apache.org/POM/4.0.0
* http://maven.apache.org/xsd/maven-4.0.0.xsd
* http://www.w3.org/2001/XMLSchema-instance