[PATCH + 8.3] Don't derive partial_symbol from general_symbol_info

[Christian Biesinger via gdb-patches]

>>>>> "Tom" == Tom Tromey <tom@tromey.com> writes:
Tom> This patch partly reverts commit 8a6d42345 ("Change representation of
Tom> psymbol to flush out accessors"); specifically, it changes
Tom> partial_symbol to no longer derive from general_symbol_info.

Hi Tom,

I don't really understand this patch, could you elaborate a bit about how
inheriting makes it less likely that fields will be initialized? In
particular the value field, since it sounds like that's where the problem
is.

Thanks!
Christian