Android an Chrome have several repos with >300k refs. We sometimes see
negotiations of >100k rounds. This change provides a "minimal negotiation"
feature on the client side that limits how many "have" lines the client
sends. The client extracts the current SHA-1 values for the refs in its
wants set, and terminates negotiation early when all of those values have
been sent as haves. If a new branch is being fetched then that set will
be empty and the client will terminate after current default minimum
of two rounds.

This feature is gated behind a "fetch.useminimalnegotiation" configuration
flag, which defaults to false.

Change-Id: Ib12b095cac76a59da6e8f72773c4129e3b32ff2b
Signed-off-by: Terry Parker <tparker@google.com>

Change-Id: Id70e2c27e38bf12f87e66b28fbd0b06908494764
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

Since the introduction of generic type parameter inference in Java 7,
it's not necessary to explicitly specify the type of generic parameters.

Enable the warning in Eclipse, and fix all occurrences.

Change-Id: I9158caf1beca5e4980b6240ac401f3868520aad0
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

Java compiler must generate synthetic access methods for private methods
and fields of the enclosing class if they are accessed from inner
classes and vice versa.

While invisible in the code, those synthetic access methods exist in the
bytecode and seem to produce some extra execution overhead at runtime
(compared with the direct access to this fields or methods), see
https://git.eclipse.org/r/58948/.

By removing the "private" access modifier from affected methods and
fields we help compiler to avoid generation of synthetic access methods
and hope to improve execution performance.

To validate changes, one can either use javap or use Bytecode Outline
plugin in Eclipse. In both cases one should look for "synthetic
access$<number>" methods at the end of the class and inner class files
in question - there should be none.

NB: don't mix this "synthetic access$" methods up with "public synthetic
bridge" methods generated to allow generic method override return types.

Change-Id: I0ebaeb2bc454cd8051b901addb102c1a6688688b
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>

This allows for testing arbitrary sets of push/fetch hooks (e.g.
PreReceiveHook) without depending on either an external protocol (e.g.
HTTP) or the local filesystem.

Change-Id: I4ba2fff9c8a484f990dea05e14b0772deddb7411