setting UIMA_HOME

[Marshall Schor]

Would it be a good idea to set UIMA_HOME (if not set) the way ACTIVE_MQ 
does, by some code like this:

rem %~dp0 is expanded pathname of the current script under NT
set DEFAULT_UIMA_HOME=%~dp0..
if "%UIMA_HOME%"=="" set UIMA_HOME=%DEFAULT_ACTIVEMQ_HOME%
set DEFAULT_ACTIVEMQ_HOME=

Basically, if UIMA_HOME isn't set, set it to the directory above the one 
where this script is being run from.

-Marshall