[Bug go/70597] [6/7 Regression] cmd/go: deduplicate gccgo afiles by package path, not *Package

[ian at airs dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70597

Ian Lance Taylor <ian at airs dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|6.3                         |6.2

--- Comment #4 from Ian Lance Taylor <ian at airs dot com> ---
A patch to fix this was committed to the GCC 6 branch before the 6.2 release. 
It is also fixed on mainline.