added parser for what-if metalanguage

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@22751 99afaf0d-6903-0410-885a-c66a8bbb5f81
added lexer and parser specification used by JFlex and Java Cup for generating Lexer and Parser

git-svn-id: svn://svn.forge.objectweb.org/svnroot/spagobi/V_4.x/Server/trunk@22752 99afaf0d-6903-0410-885a-c66a8bbb5f81