When SameParameterValueOptimizer substitutes a value
for a parameter, it now casts the value to the type
of the parameter.  This prevents, for example,
treating an integer as a long.

Review by: scottb


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@7338 8db76d5a-ed1c-0410-87a9-c151d255dfc7