GitLab

A simple wrapper for libgit2's git_status_should_ignore() method.

The author signature is optional. It's now an empty signature by
default. Now the method can be called with only giving the committer
signature.

Don't use a method introduced only at Qt5.

Removed because the test doesn't actually test anything.

On Windows, the path names that come out of libgit2 are all encoded as
UTF-8, and the path names given as input are also expected to be encoded
as UTF-8. This is due to the POSIX emulating functions in libgit2 using
UTF-8 for everything. However, since QFile's encodeName/decodeName
convert between UTF-8 and local encoding, which is not UTF-8, I've used
QString's toUtf8/fromUtf8 methods instead.

In Linux and OS X the POSIX functions most probably use the system
locale so it is probably best to use QFile's methods in systems other
than Windows.

The "signals" macro is defined as "protected" in Qt4 which makes it not
OK to emit signals of a class from outside the class (as was done in the
now removed RepositoryCloneRemoteListener). But the Repository Private
class has access to it's owner class and can emit its signals too. So
the Private class can act as the RemoteListener too (and now there's no
need to create a temporary object for the duration of the clone either).

This is version 0.22.1 of libgit2.

The helper wraps the libgit2 git_strarray type and handles its memory.
It's a private class since users should only deal with QStringLists and
other C++ level string containers.

Setting and using the git_remote callbacks is now handled in a utility
which the Remote class uses. This enables others to use the same
functionality too.

The goal here was to get Remote not be the only class that can use the
Credentials (Remote was a friend class for Credentials). Now any class
in the library can use the Credentials throgh the CredentialsPrivate
interface.