Making the methods static would gain little in performance,
make the code harder to change. Removing unncessary warnings
is more important.

Change-Id: If3e6aa9c1d92e58b4e7a8e246cf4aace237d7a7b

These settings were added by Eclipse simply by touching
the project settings. Adding these makes it simpler to see
what local changes have been made.

Change-Id: Iab0aa62530312eb0c78b03b5c6a632742bcc4978

See change I08bed4275af9ec52aa4d7054067ac82f6a3c9781, where fixing such
warning lead to complaints.

If fixing is not wanted, disable it instead.

Change-Id: If31d4028fa1c6377a11e83ed5688b45701cec68b

Allow use of ArchiveCommand without depending on the jgit command-line
tools.

To avoid complicating the process of installing and upgrading JGit,
this does not add a dependency by the org.eclipse.jgit bundle on
commons-compress.  Instead, the caller is responsible for registering
any formats they want to use by calling ArchiveCommand.registerFormat.

This patch puts functionality that requires an archiver into a
separate org.eclipse.jgit.archive bundle for people who want it.  One
can use it by calling ArchiveCommand.registerFormat directly to
register its formats or by relying on OSGi class loading to load
org.eclipse.jgit.archive.FormatActivator, which takes care of
registration automatically.

Once the appropriate formats are registered, you can make a tar or zip
from a git tree object as follows:

	ArchiveCommand cmd = git.archive();
	try {
		cmd.setTree(tree).setFormat(fmt).setOutputStream(out).call();
	} finally {
		cmd.release();
	}

Change-Id: I418e7e7d76422dc6f010d0b3b624d7bec3b20c6e

Note the the settings are slightly less restrictive for test bundles.
-Also cleanup a couple of malformed javadocs
-Update compiler warnings/errors to include default values from Juno
-We now flag diagnosed null dereference as error. We didn't do that
 earlier because of some false positives.

Change-Id: I58386d63164e65d3d8d1998da3390d99bdc7381a
Signed-off-by: Chris Aniszczyk <zx@twitter.com>

We now supply an exported format description for anyone to import
into their own workbench, and all projects reference this style in
a consistent way.

Change-Id: Ic243544a761ef2db29025a89ba6bb932a3a3ce34
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

Per CQ 3448 this is the initial contribution of the JGit project
to eclipse.org.  It is derived from the historical JGit repository
at commit 3a2dd9921c.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>