When using fallback target, its result counts as the result of the failed target
IvyRetrieveTarget now exports the retrieved artifacts as an implicit ResourceCollection
Upgraded Ivy dependency to 2.3.0; got rid of the hack in IvyRetrieveTarget
Expand variables in IvyRetrieveTarget's 'ivy.xml' setting
Expand variables in a string before interpreting it as a ResourceCollection
Option to set variables for ReinforceTarget's inner build
Merge variable expansions into master
Fix log message
Add dependency on JUnit 4.11
Fix bug in Variables.isNotEof
Fix: save result of fallback target as that of the failed target
Improve build scripts