Merge pull request #9 from aselle/master

Warning fix
Windows compiler fix
More windows compile fixes... (allow not having qt and not having doxygen)
One more fix (remove required argument from Qt search)
More windows fixes (this time to the Segraph demo)
Initial work on integrating SeExprEditor and change to Microsoft License

Add an editor directory with our Qt SeExpr editor
Adding readme so necessary directory is included
Add full LICENSE file complete copy
Added license headers to *.se, *.rib and *.sh
Renamed QdSe* to SeExprEd* in src/SeExprEditor
Fixed compiler warnings. Used Q_UNUSED for Qt unused params.  Added
SeExprMacros.h with UNUSED for non-Qt unused params.  Added some
additional license headers to parser source files, makefiles and docs.