Install manpage via ebuild + fix repo link

Hi,
I experimented a bit with manpage installation, this should actually install manpage via ebuild.
Also fixes minor problem with git download, cos git[curl] is required for successfull fetch from https:// protocol.
This way even if https fetch fails, git:// shall succed (no dependencies).
Sorry for number of commits that went into this "two line patch", forgot to create branch for my experiments :(

Best regards,
Tomas Pruzina