* doc/en/*/*.xml : docs for new GValue members and size_t changes.
* generator/SymbolTable.cs : add ssize_t and make size_t a UIntPtr
instead of the current broken int mapping on 64 bit platforms.
* gtkhtml/HTMLStream.custom : fix size_t related overload.
[fixes#69574]
svn path=/trunk/gtk-sharp/; revision=37223
