Spigot POM Changes.
Measure the duration of the entire timings run.
Add CustomTimingsHandler for adding new CraftBukkit custom timings
Add nag for bad plugins.
Revert "Deprecate methods in JavaPluginLoader and PluginClassLoader"

This reverts commit 203de4180b40f069d2c175d763476bd4ce338c76.

Conflicts:
	src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java

Conflicts:
	src/main/java/org/bukkit/plugin/java/JavaPluginLoader.java
Libkit pom changes
Signed-off-by: Chris Sanders <zidane@outlook.com>
Expose server to PluginLoader.
Signed-off-by: Chris Sanders <zidane@outlook.com>
Libkit changes
Signed-off-by: Chris Sanders <zidane@outlook.com>