This reverts commit 94446fa8.

This commit is blocking to set revision with branch equal master. It
means that the code below is not allowed.

[target]
revision = 1234
branch = master

This commit in order to prevent fail when only revision is specified
and remote depository do not have 'master' branch.

If 'ignore-ssl-certificate' option is true, gitclone will not check
if ssl certificate are valid when fetching.

This reverts commit 0877f72d.

This reverts commit 6a6d5051.

We explicity need dependency to libnetworkcache.

Conflicts:
	setup.py