Modify placement of some text amplifier fields for land and subsurface units

While browsing the latest [2525D spec.](http://www.assistdocs.com/search/document_details.cfm?ident_number=114934) I noticed that a couple of inconsistencies between the placement of amplifier fields in the PDF and `jmsml_D_Base.xml` . This pull request attempts to correct this for the land (page 183/167 in the spec.) and subsurface units (page 346/330). 

![image](https://cloud.githubusercontent.com/assets/29217/4564294/26d71786-4f16-11e4-9cab-ebcdeff53830.png)
![image](https://cloud.githubusercontent.com/assets/29217/4564298/33ae9d80-4f16-11e4-902e-a182c639f2b9.png)