Add Javadoc description for packages

These appear as descriptions in the index, see here (currently empty):

http://download.eclipse.org/jgit/docs/latest/apidocs/

Change-Id: If7996deef30ae688bade8b3ad6b19547ca3d8b50
Signed-off-by: Chris Aniszczyk <zx@twitter.com>

org.eclipse.jgit/src/org/eclipse/jgit/api/errors/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Exceptions thrown by API commands.
+ */
+package org.eclipse.jgit.api.errors;

org.eclipse.jgit/src/org/eclipse/jgit/api/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * High-level API commands (the porcelain of JGit).
+ */
+package org.eclipse.jgit.api;

org.eclipse.jgit/src/org/eclipse/jgit/blame/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Computing blame/annotate information of files.
+ */
+package org.eclipse.jgit.blame;

org.eclipse.jgit/src/org/eclipse/jgit/diff/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Comparing file contents by computing diffs.
+ */
+package org.eclipse.jgit.diff;

org.eclipse.jgit/src/org/eclipse/jgit/dircache/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Reading and editing the directory cache (index).
+ */
+package org.eclipse.jgit.dircache;

org.eclipse.jgit/src/org/eclipse/jgit/errors/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Exceptions thrown by lower-level JGit APIs.
+ */
+package org.eclipse.jgit.errors;

org.eclipse.jgit/src/org/eclipse/jgit/events/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Events and listener interfaces.
+ */
+package org.eclipse.jgit.events;

org.eclipse.jgit/src/org/eclipse/jgit/fnmatch/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * File name matcher.
+ */
+package org.eclipse.jgit.fnmatch;

org.eclipse.jgit/src/org/eclipse/jgit/ignore/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Ignore rule parser/matcher (for .gitignore entries).
+ */
+package org.eclipse.jgit.ignore;

org.eclipse.jgit/src/org/eclipse/jgit/internal/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Internal classes.
+ */
+package org.eclipse.jgit.internal;

org.eclipse.jgit/src/org/eclipse/jgit/lib/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Core API for repository, config, refs, object database.
+ */
+package org.eclipse.jgit.lib;

org.eclipse.jgit/src/org/eclipse/jgit/merge/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Content and commit history merge algorithms.
+ */
+package org.eclipse.jgit.merge;

org.eclipse.jgit/src/org/eclipse/jgit/nls/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Native language support (i18n).
+ */
+package org.eclipse.jgit.nls;

org.eclipse.jgit/src/org/eclipse/jgit/notes/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Git notes processing (for commits, etc).
+ */
+package org.eclipse.jgit.notes;

org.eclipse.jgit/src/org/eclipse/jgit/patch/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Patch file parser and data structure.
+ */
+package org.eclipse.jgit.patch;

org.eclipse.jgit/src/org/eclipse/jgit/revplot/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Building/rendering revision graphs.
+ */
+package org.eclipse.jgit.revplot;

org.eclipse.jgit/src/org/eclipse/jgit/revwalk/filter/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Filters for use in revision walking.
+ */
+package org.eclipse.jgit.revwalk.filter;

org.eclipse.jgit/src/org/eclipse/jgit/revwalk/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Walking revision graphs (commit history).
+ */
+package org.eclipse.jgit.revwalk;

org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Distributed file system based repository storage.
+ */
+package org.eclipse.jgit.storage.dfs;

org.eclipse.jgit/src/org/eclipse/jgit/storage/file/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * File based repository storage.
+ */
+package org.eclipse.jgit.storage.file;

org.eclipse.jgit/src/org/eclipse/jgit/storage/pack/package-info.java

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+/**
+ * Reading/writing Git pack files.
+ */
+package org.eclipse.jgit.storage.pack;

org.eclipse.jgit/src/org/eclipse/jgit/submodule/package-info.java

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+/**
+ * Git submodule support.
+ */
+package org.eclipse.jgit.submodule;

org.eclipse.jgit/src/org/eclipse/jgit/transport/package-info.java

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+/**
+ * Transport (fetch/push) for different protocols.
+ */
+package org.eclipse.jgit.transport;

org.eclipse.jgit/src/org/eclipse/jgit/transport/resolver/package-info.java

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+/**
+ * Server-side resolver for locating repositories by URLs.
+ */
+package org.eclipse.jgit.transport.resolver;

org.eclipse.jgit/src/org/eclipse/jgit/treewalk/filter/package-info.java

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+/**
+ * Filters for use in tree walking.
+ */
+package org.eclipse.jgit.treewalk.filter;

org.eclipse.jgit/src/org/eclipse/jgit/treewalk/package-info.java

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+/**
+ * Walking and comparing directory/file trees (of commits, file system).
+ */
+package org.eclipse.jgit.treewalk;

org.eclipse.jgit/src/org/eclipse/jgit/util/io/package-info.java

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+/**
+ * Utility classes for IO (streams).
+ */
+package org.eclipse.jgit.util.io;

org.eclipse.jgit/src/org/eclipse/jgit/util/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Utility classes.
+ */
+package org.eclipse.jgit.util;