JIRA#FOP-1069: Warn instead or error on invalid property values.

JIRA#FOP-1069:  Warn instead or error on invalid property values.
--Thi--s line, and those below, will be ignored--

M    src/java/org/apache/fop/render/ps/PSTextPainter.java
M    src/java/org/apache/fop/layoutmgr/inline/ImageLayout.java
M    src/java/org/apache/fop/fo/FObj.java
M    src/java/org/apache/fop/fo/FOValidationEventProducer.java
M    src/java/org/apache/fop/fo/FOValidationEventProducer.xml
M    status.xml

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1430746 13f79535-47bb-0310-9956-ffa450edef68