getGlobalSymbol -- create a global symbol in a global dictionary

Synopsis

Usage:
getGlobalSymbol(dict,nam)
Inputs:
- dict, an object of class GlobalDictionary
- nam, a string
Consequences:
- the new symbol is stored under the name nam in the dictionary dict
Outputs:
- a new global symbol whose name is the string nam

i1 : d = new Dictionary

o1 = GlobalDictionary{}

o1 : GlobalDictionary

i2 : sym = getGlobalSymbol(d,"foo")

o2 = foo

o2 : Symbol

i3 : d

o3 = GlobalDictionary{...1...}

o3 : GlobalDictionary

i4 : peek d

o4 = Dictionary{"foo" => foo}

i5 : d#"foo" === sym

o5 = true

i6 : d#"asfd" = sym

o6 = foo

o6 : Symbol

i7 : peek d

o7 = Dictionary{"asfd" => foo}
                "foo" => foo