Two memory access fixes

Call gitfo_lstat with the full pathname instead of the relative one,
which fails in case the current working directory is different from
the workdir.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

Also allow space for the null-terminator when allocating the buffer in
packfile_unpack_compressed. Up to now, the last newline had served as
a terminator, but 858ef372 searches for a double-newline and exposes
the problem.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

On this rascalicious minor release of libgit2:

- We've dropped support for Waf. All the build process is now managed
through CMake for all platforms.

- We've removed the custom backends from the repository. You can now
find a collection of Custom backends on their own repo, under the
libgit2 org. Including MySQL and Memcache backends, courtesy of the
beardful Brian Lopez.

- We are rocking a new documentation system, Docurium, courtesy of the
insightful Scott Chacon. Check out the details for each single method
in our external API and the way they've evolved through the history
of the library:

	http://libgit2.github.com/libgit2/

This will certainly come in handy if you are developing bindings for
the library.

- You can now check the linked version of the library from your
application or bindings, using `git_libgit2_version`.

- We have a gazillion new features, courtesy of our invaluable
collaborators, including:

	* Support for Config files!
	* Support for prefix-only reads on the ODB
	* Repository discovery
	* Support for the Unmerged Entries index extension
	* Better Windows support
	* 30.000 bug fixes (actual number may be lower)

Thanks as always to everyone who makes this project possible.

Here's the full list of all external API changes:

- git_index_open_bare
- git_index_open_inrepo
- git_odb_backend_sqlite
- git_oid_mkraw
- git_oid_mkstr
- git_reference_listcb
- git_repository_workdir

= git_index_get
= git_repository_path
= git_tree_entry_byindex

+ git_blob_lookup_prefix
+ git_commit_lookup_prefix
+ git_config_add_file
+ git_config_add_file_ondisk
+ git_config_file__ondisk
+ git_config_find_global
+ git_config_foreach
+ git_config_free
+ git_config_get_bool
+ git_config_get_int
+ git_config_get_long
+ git_config_get_string
+ git_config_new
+ git_config_open_global
+ git_config_open_ondisk
+ git_config_set_bool
+ git_config_set_int
+ git_config_set_long
+ git_config_set_string
+ git_index_entry_stage
+ git_index_entrycount_unmerged
+ git_index_get_unmerged_byindex
+ git_index_get_unmerged_bypath
+ git_index_open
+ git_object_lookup_prefix
+ git_odb_read_prefix
+ git_oid_fromraw
+ git_oid_fromstr
+ git_oid_ncmp
+ git_reference_foreach
+ git_repository_config
+ git_repository_discover
+ git_repository_is_bare
+ git_tag_lookup_prefix
+ git_tree_entry_type
+ git_tree_lookup_prefix

Allows a custom user backend to passthrough one of the callbacks. Used
for e.g. caching backends.

Fix link to API documentation

Scott commands, I obey.

Fix compilation error in MSVC when compiling for c++

Do not mess with environment variables anymore. The new external API has
more helper methods, and everything is explicit.

If a config has several files, we need to check all of them before we
can say that a variable doesn't exist.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

The repo's configuration should take precedence over the global one.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

It's not enough to load the config, we also need to explicitely parse
it after we create it.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

This function puts the global and repository configurations in one
git_config object and gives it to the user.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

Noticed by txdv

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

Runtime checks are asserting on the embedded ZLib code because of
truncation (see zlib/trees.c:218). This is not good or pretty, but I'm
wary about patching the ZLib code even more.

There are two ways to fix this:

	- Patch the ZLib code, and start storing a diff/patchset on
	how does our version of ZLib differ from the original one, so we can
	be more or less on sync when new version of ZLib.

	- Go back to ZLib as an external dependency, which is np for *NIX
	users but annoying as dicks for Windows users.

THINK HARD

Fix misleading comment in CMake build script

Plug memory leaks

The test wasn't updated when repos lost ownership of indices

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

Simplify loose ref writing

There is no need to store the format outselves, as the library
provides git_filebuf_printf which takes care of the formatting itself.

Also get rid of an use of strcat + strcpy which is always a nice
thing.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

Fix all the missmatched arguments in the docs

Drop redundant methods. The ncmp method is now public

Yeah. Finally. Fuck the old names, this ain't POSIX
and they don't make any sense at all.

Same name as `git_config_foreach`

Implement config writing