[IZPACK-1180] ConfigurationInstallerListener: Nested <entry> remains empty if it didn't exist before

[rkrell]

Fixes https://jira.codehaus.org/browse/IZPACK-1180:

If a property file is created by ConfigurationListener, or nested doesn't still exist before applyiong configuration actions, the nested entries are left empty and their value attribute isn't applied at all.
Example

<configurable type="options" keepOldKeys="true" keepOldValues="true" tofile="${INSTALL_PATH}/db.properties">
        <entry key="driver" value="org.firebirdsql.jdbc.FBDriver" />
        <entry key="url" value="jdbc:firebirdsql:${db.host}/${db.port}:##user.dir#/" />
        <entry key="file" value="${database.scriptsfolder}/${db.name}.fdb" />
        <entry key="user" value="${db.user}" />
        <entry key="pass" value="${db.password}" />
</configurable>

if db.properties doesn't exist the ConfigurationInstallerListener leaves it in this state:

driver=
url=
file=
user=
pass=

[buildhive]

IzPack project » izpack #646 SUCCESS
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