Update ChangeLog git reference location
Update ChangeLog git reference location

Also delete > 10 year old entries.

libunwind/libunwind,frida/libunwind,djwatson/libunwind,djwatson/libunwind,frida/libunwind,libunwind/libunwind,vtjnash/libunwind,libunwind/libunwind,vtjnash/libunwind,vtjnash/libunwind,djwatson/libunwind,frida/libunwind