tree ffba3d313ce7b3a68ded5647b8d8786d1f060d42
parent a6c374a8f1409a5aa82b70cad52a0e0454d4e800
author Joe Tsai <joetsai@digital-static.net> 1537556097 -0700
committer Joe Tsai <thebrokentoaster@gmail.com> 1537558205 +0000

reflect/prototype: lower minimum support to Go1.9

The minimum supported version is currently Go1.10 since we use strings.Builder
for a fairly significant optimization when constructing all of the descriptor
full names.

The strings.Builder implementation is not particularly complicated,
so just fork it into our code. The golang/protobuf and the golang/go
projects share the same authors and copyright license.

Change-Id: Ibb9519dbe756327a07369f10f80c15761002b5e7
Reviewed-on: https://go-review.googlesource.com/136735
Reviewed-by: Damien Neil <dneil@google.com>