Log Message:
Update to 0.90:

shared-mime-info 0.90 (2010-12-1)
* Mime-type Changes:
- Make application/epub+zip sub-class-of application/zip
- Make sure RAM files are not all treated as text
- Make CMakefiles a sub-class of text/plain
- Add new mime-type for Panasonic RW2 images
- Add XSL magic
- Add root-XML for XSL
- Add *.gem as a glob for tar archives
- Add test case for text/directory files
- Add go source code
- Add pdf.xz mime-type
- Add text/x-ooc source code
- Add Cobol source code

* Other:
- Don't error out on the x-scheme-handler/* mime-types
- Fix crasher when mime-magic is empty