Add: minor simplification to DaoParser;
Adding: DVM_GETVS and DVM_SETVS for shared/static variables and closure up variables;
Add: new implementation of closure with several improvements and fixings;
Add: GETVS/SETVS for up-values and static variables;
Add: support for static variables;
Add: support for initialization of global and static variables with const expressions;
Change: global variables in nested scopes become static variables.
Add: defer{BLOCK}, to defer the execution of BLOCK to the function returning point.