Rename org.informantproject.shaded.aop.xml file

Shorten/simplify the filename org.informantproject.shaded.aop.xml to
org.informantproject.aop.xml
Upgrade to guava 11.0.1
Maven pom file cleanup

Add license tag, url tag and clean up the names and descriptions.
Require maven 2.2.1 or higher
Upgrade to guava 11.0.2
Upgrade to maven-shade-plugin 1.6
Upgrade to aspectj 1.7.0-SNAPSHOT

The latest aspectj 1.7.0-SNAPSHOT has two relevant performance patches:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=374745 and
https://bugs.eclipse.org/bugs/show_bug.cgi?id=374964.
No longer using aspectj
Add comment about not upgrading guava any further

Guava 11.0.2 is the last version of guava that supports JDK 5.
Add .gitattributes file

Add .gitattributes file to normalize line endings to LF on checkin
without having to rely on the core.autocrlf setting.
Update dependency versions
Generate dependency reduced pom under target/

This way it will be ignored by git (without adding another gitignore
pattern), and also it will be cleaned by mvn clean (without adding a
custom maven-clean-plugin configuration).
Logback is now shaded directly in informant-core

The separate artifacts for shaded-logback-core and
shaded-logback-classic are no longer needed.
Use more minimalistic xml comment style
Upgrade to maven-shade-plugin 2.0-SNAPSHOT

The new shadeSourcesContent feature is included in 2.0-SNAPSHOT, so
don't need to maintain a custom maven-shade-plugin build anymore for it
(see http://jira.codehaus.org/browse/MSHADE-112). maven-shade-plugin
2.0-SNAPSHOT requires maven 3.0, so mark the build as requiring maven
3.0 now.
Use unshaded slf4j by default if on classpath
Upgrade to guava-jdk5 version 13.0
Update scm info in pom.xml files
Convert from informantproject.org to informant.io
Remove apache snapshot repo, no longer needed