POM: Split into -bom, -core, -parent, -bundle.

Change-Id: I1fd4cc766b60266ef9dcc40e943b45d067dd7b90
diff --git a/.gitignore b/.gitignore
index 530c14c..e8b22c5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 *~
 /.idea
 /target
+/jgvariant-*/target