build ivy plugin via sigil vs bnd FELIX-1444
* add resolver dependencies to sigil-defaults
* add ant lib to sigil-repos
* set up sigil and ivy files
* set up ivy/ intermediate build files
* retrieve built ivy plugin jar in top level site target
* tidy up unused targets from build.xml


git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@800457 13f79535-47bb-0310-9956-ffa450edef68
11 files changed