vcs-svn: eliminate global byte_buffer
vcs-svn: eliminate global byte_buffer

The data stored in byte_buffer[] is always either discarded or
written to stdout immediately.  No need for it to persist between
function calls.

Signed-off-by: Jonathan Nieder <b57189c5f2fd5b3daf3350a77fde90def1080fa5@gmail.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git