* Moved the ExpressionParser class to shared. It's now built into its own
static library.
* Added hexadecimal number support to the expression parser as well as
Evaluation*() methods to get a number instead of a string.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31298 a95241bf-73f2-0310-859d-f6bbb57e9c96
