[RFAv2 4/4] Fix gdb.ada/fun_renaming.exp by using more unique names.

[Joel Brobecker]

> gdb/testsuite/ChangeLog
> 2018-12-26  Philippe Waroquiers  <philippe.waroquiers@skynet.be>
> 
> 	* gdb.ada/fun_renaming/pack.ads (Next): Rename to Fun_Rename_Test_Next.
> 	(Renamed_Next): Rename to Renamed_Fun_Rename_Test_Next.
> 	gdb.ada/fun_renaming/pack.adb (Next): Rename to Fun_Rename_Test_Next.
> 	gdb.ada/fun_renaming/fun_renaming.adb (N): Rename to Fun_Rename_Test_N.
> 	gdb.ada/fun_renaming.exp: Update accordingly.

Thank you, Philippe. This is OK as well.

-- 
Joel