Update src/main/scala/scala/slick/util/iter/Iteratee.scala

typo {eof->empty}
Make Invoker a subtype of Function1
Remove Filter nodes with a LiteralNode(true) as the filter condition.

This used to work in ScalaQuery but was broken at some point during the
transition to the new AST. It did go by unnoticed because a bug in Scala
2.10.0 prevented these filter calls from being generated in the first
place (https://issues.scala-lang.org/browse/SI-6968). As a further
complication, the existing code for removing these nodes in
Filter.nodeDelegate along with an unnecessary Node.apply call in Dump
made them disappear from the AST dumps even though they were still in
the tree!

The fix for SI-6968 in Scala 2.10.1-RC1 finally caused failures due to
the unexpected query shape (with an unnecessary Filter) when dealing
with GroupBy nodes in convertToComprehensions.

This fix removes the extra Node.apply in Dump and the "hidden" narrowing
in Filter.nodeDelegate, replacing it with an explicit factory method
Filter.ifRefutable.

Fixes issue #105. Testable by switching to Scala 2.10.1-RC1.
Merge pull request #106 from slick/tmp/irrefutable-filter-conditions

Remove Filter nodes with a LiteralNode(true) as the filter condition using additional Filter.ifRefutable constructor.
Set path to databases.properties through system property.

This makes it possible to easily run tests on multiple testing VMs with
different database configurations from the same checkout of Slick.

Review by @cvogt
direct embedding match tuples via symbols (fixes macro paradise incompatibility mentioned in https://github.com/slick/slick/pull/112/files#L4R106)
Merge pull request #91 from aloiscochard/topic/querytemplate-function

Make Invoker a subtype of Function1
Merge pull request #90 from nafg/patch-2

Update src/main/scala/scala/slick/util/iter/Iteratee.scala
Merge pull request #109 from slick/tmp/switch-dbprops

Set path to databases.properties through system property.