ICE-2605: changing liferay-plugin-package format from .xml to .properties

Files:
modified: /icefaces/branches/icefaces-1.7/icefaces/samples/etc/build-common.xml (try)
added: /icefaces/branches/icefaces-1.7/icefaces/samples/component-showcase/portlets/conf/liferay/liferay-plugin-package.properties (try)
deleted: /icefaces/branches/icefaces-1.7/icefaces/samples/component-showcase/portlets/conf/liferay/liferay-plugin-package.xml
added: /icefaces/branches/icefaces-1.7/icefaces/samples/portlet/chat/conf/liferay-plugin-package.properties (try)
deleted: /icefaces/branches/icefaces-1.7/icefaces/samples/portlet/chat/conf/liferay-plugin-package.xml