TPS-819:commit for TDI-31730.

tFileOutputExcel appends content to an Excel file containing formula
https://jira.talendforge.org/browse/TDI-30022
Note:1.Update POI
2.Fixed Hex2Dec problem
3.Rebuild sampleexcel.jar

.gitignore

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+*.class
+bin/
+target/
+class/
+classes/

README.md

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+# Talend Open Studio for Data Integration
+http://www.talend.com
+
+
+![alt text](http://www.talend.com/sites/default/files/logo-talend.jpg "Talend")
+
+
+> Contents
+
+This repository contains the source files for Talend Open Studio for Data Integration. These files must be used together with the common code contained in [tcommon-studio-se](https://github.com/Talend/tcommon-studio-se).
+
+
+## Repository Structure
+All Talend Studio repositories follow the same file structure:
+```
+
+  |_ main           Main Eclipse plugins and features
+    |_ features
+    |_ plugins
+  |_ test           Eclipse plugins and features for unit tests. 
+      |_ features
+      |_ plugins
+  |_ i18n           Internationalization plugins and features.
+      |_ features
+      |_ plugins
+```
+
+## Download
+
+You can download this product from the [Talend website](http://www.talend.com/download/data-integration).
+
+
+## Usage and Documentation
+
+Documentation is available on [Talend Help Center](http://help.talend.com/).
+
+
+
+## Support 
+
+You can ask for help on our [Forum](http://www.talend.com/services/global-technical-support).
+
+
+## Contributing
+
+We welcome contributions of all kinds from anyone.
+
+Using the bug tracker [Talend bugtracker](http://jira.talendforge.org/) is the best channel for bug reports, feature requests and submitting pull requests.
+
+Feel free to share your Talend components on [Talend Exchange](http://www.talendforge.org/exchange).
+
+
+## License
+
+Copyright (c) 2006-2014 Talend
+
+Licensed under the LPGLv3 License