Fixes to XmlCursor Javadoc

[Steven Traut <st...@bea.com>]

Here are a few fixes to a few Javadoc nits in XmlCursor. Changes include:

- update selectPath methods to specify that functions aren't supported.
- update getTextValue methods to note that:
  - a negative value for the character count is treated as meaning "the whole text", rather than as an illegal value.
  - getTextValue now returns NAMESPACE values
  - calling getTextValue on END or ENDDOC now throws java.lang.IllegalStateException.
  - calling getTextValue on a PI strips the PI name as well as the delimiting <? and ?>.

Steve

 <<XmlCursor.java>>