Clean up a provided absolute or relative directory path.

This prettification relies on basic operations such as coalescing multiple forward slashes into a single slash, removing '.' and './' current directory segments, and removing parent directory whenever '..' is encountered. If not empty, the returned path ends with a forward slash.

For instance, this will turn "d1/s1///s2/..//../s3" into "d1/s3/".

This only performs a string based analysis of the path. No checks are done to make sure the path actually makes sense from the file system perspective.

- remove() would read one-past array bounds.
- resize() would fail if the initial size was 1, because it multiplied by 1.75
  and truncated the resulting value. The buffer would always remain at size 1,
  but elements would repeatedly be appended (via insert()) causing a crash.

Major changes and rationale:
- /WX: absolutely vital when compiling in C-mode as the compiler is
  incredibly lenient on what is allowed to compile. It allows functions to be
  called without prototypes declared, treating them as functions returning int
  taking an unspecified (read: unrestricted) list of arguments, without any
  type checking! It will simply issue a warning, which is easily overlooked.

  A real example: it will allow you to call ceil(1.75) without first including
  <math.h> causing UB, returning bogus results like 1023 on the machine I
  tested on.

- Release build separate from debug.
  Presently release builds don't exist.  Consequently they are completely
  untested. Many bugs may only manifest themselves in release mode. The current
  configuration sets debug-only flags like /RTC1 which are incompatible with
  optimization (/O2).

  In addition, the Windows build of libgit2 has no optimized version. This
  change resolves this.

- Added checksum generation in image headers. This is so debuggers don't
  complain about checksum mismatches and provides a small amount of consistency
  to binaries.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

Don't hardcode the '/sbin/ldconfig' path; also, don't run anything if
ldconfig cannot be found (Mac OS X, for instance).

Signed-off-by: Vicent Marti <tanoku@gmail.com>

All the relevant git_object methods have been moved to object.c

Signed-off-by: Vicent Marti <tanoku@gmail.com>

Keep all the repository init code as static.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

It's MurmurHash3 slightly edited to make it
cross-platform. Fast and neat.

Use this for hashing strings on hash tables instead
of a full SHA1 hash. It's very fast and well distributed.

Obviously not crypto-secure.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

The test runner was running the manifest and other crap files. Now it
filters out to just the executables.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

It is not a good idea to export these internal symbols now that they are
not required to run the unit tests.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

Fix the test building issues once for all; each test is linked
with the raw objects of the library, not with any compiled version. That
way we make sure the tests always run, and are always linked with the
latest and most up-to-date version of the code.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

It was not being used by any methods (only by malloc and calloc), and
since it needs to be TLS, it cannot be exported on DLLs on Windows.

Burn it with fire. The API always returns error codes!

Signed-off-by: Vicent Marti <tanoku@gmail.com>

There was no export definition for GIT_EXTERN_TLS() under MSVC.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

Some external functions were not being exported because they were using
the 'extern' keyword instead of the generic GIT_EXTERN() macro.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

Use forward slashes for the TEST_RESOURCES definition. libgit2 uses only
forward slashes.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

Made is_windows_rooted_path() able to cope with awkward but valid relative paths such as "C:..\File.txt".

Path "C:..\File.txt" refers to a file called File.txt located in the parent directory of the current directory on drive C:.

Implemented recursive directory creation
Fix style issues

Signed-off-by: Vicent Marti <tanoku@gmail.com>

Signed-off-by: Vicent Marti <tanoku@gmail.com>

The new signature struct is public, and contains information about the
timezone offset. Must be free'd manually by the user.

Signed-off-by: Vicent Marti <tanoku@gmail.com>