Conflicts:
	tests-clay/clay_main.c

`delete` is a reserved keyword in C++.

This updates to implementation of gitattribute macros to be much more
similar to core git (albeit not 100%) and to handle expansion of
macros within macros, etc.  It also cleans up the refcounting usage
with macros to be much cleaner.

Also, this adds a new vector function `git_vector_insert_sorted()`
which allows you to maintain a sorted list as you go.  In order to
write that function, this changes the function `git__bsearch()` to
take a somewhat different set of parameters, although the core
functionality is still the same.

Add support for git attribute macro definitions.  Also, add
support for cache flush API to clear the attribute file content
cache when needed.

Additionally, improved the handling of global and system files,
making common utility functions in fileops and converting config
and attr to both use the common functions.

Adds a bunch more tests and fixed some memory leaks.  Note that
adding macros required me to use refcounted attribute assignment
definitions, which complicated, but probably improved memory usage.

Added link to vala bindings

Add Perl to the list of bindings.

Includes relevant Clay test

Small enhancements to remote-ls when working against local repositories

remote: add test to retrieve the advertised references from a local repository and fix related implementation

This adds APIs for querying git attributes.  In addition to
the new API in include/git2/attr.h, most of the action is in
src/attr_file.[hc] which contains utilities for dealing with
a single attributes file, and src/attr.[hc] which contains
the implementation of the APIs that merge all applicable
attributes files.

config_file: honor error

Return an error if we can't write an updated version of the config file
after config_delete.

Along with that, fix an uninitialized warning.

Signed-off-by: schu <schu-github@schulog.org>

In an effort to remove duplicate code, I accidentally left
the stat structure uninitialized in this function.  This
patch restores that data gathering.

Really delete variables

Instead of just setting the value to NULL, which gives unwanted
results when asking for that variable after deleting it, delete the
variable from the list and re-write the file.

This would make us think that config variables like

    [core]
        something

is missing.

Comes with support for global events; this fixes #496.

It was not safe for git_buf_joinpath to be used with a pointer
into the buf itself because a reallocation could invalidate
the input parameter that pointed into the buffer.  This patch
makes it safe to self join, at least for the leading input to
the join, which is the common "append" case for self joins.

Also added unit tests to explicitly cover this case.

This should actually fix #511

This commit fixes #511.

commit: add test to ensure predictability of generation of commit, tree and blob object ids

Prevent segfaulting on Windows when building a temporary filename

Conflicts:
	tests-clay/clay.h
	tests-clay/clay_main.c

Conflicts:
	tests-clay/clay_main.c

This converts virtually all of the places that allocate GIT_PATH_MAX
buffers on the stack for manipulating paths to use git_buf objects
instead.  The patch is pretty careful not to touch the public API
for libgit2, so there are a few places that still use GIT_PATH_MAX.

This extends and changes some details of the git_buf implementation
to add a couple of extra functions and to make error handling easier.

This includes serious alterations to all the path.c functions, and
several of the fileops.c ones, too.  Also, there are a number of new
functions that parallel existing ones except that use a git_buf
instead of a stack-based buffer (such as git_config_find_global_r
that exists alongsize git_config_find_global).

This also modifies the win32 version of p_realpath to allocate whatever
buffer size is needed to accommodate the realpath instead of hardcoding
a GIT_PATH_MAX limit, but that change needs to be tested still.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>
Signed-off-by: Vicent Marti <tanoku@gmail.com>

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
#
# Author:    Carlos Martín Nieto <carlos@cmartin.tk>
#
# On branch development
# Your branch is ahead of 'origin/development' by 11 commits.
#
# Changes to be committed:
#   (use "git reset HEAD^1 <file>..." to unstage)
#
#	modified:   include/git2/tree.h
#	modified:   src/tree.c
#	modified:   tests-clay/clay_main.c
#	modified:   tests-clay/object/tree/diff.c
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#	0001-remote-Cleanup-the-remotes-code.patch
#	466.patch
#	466.patch.1
#	488.patch
#	Makefile
#	libgit2.0.15.0.dylib
#	libgit2.0.dylib
#	libgit2.dylib
#	libgit2_clay
#	libgit2_test
#	tests-clay/object/tree/

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>
Signed-off-by: Vicent Marti <tanoku@gmail.com>

For each difference in the trees, the callback gets called with the
relevant information so the user can fill in their own data
structures.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Fix compilation warnings