Config options:
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1.statusbar enable=?
 control if enable statusbar.

2.cursor enable=?
 control if enale cursor.

3.theme name=?
 set the name of theme.

4.data_dir value=?
 set the data directory.

5.test_data_dir value=?
 set the test data directory.

6.rotate value=0|90|180|270
 set the screen rotation angle.

Load Order
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0.Initialize with default values.
1.Load FTK_CNF
2.Load ftk.cnf in current working directory.

Example:
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<statusbar     enable="1" />
<cursor        enable="0" />
<theme         name="default" />
<data_dir      value="./data" /> 
<test_data_dir value="./testdata" />
<rotate        value="90" />