Do not create paths starting "//" when root is just "/"

(cherry picked from commit bd8b3be0c7535e74ca8b63969be5c2bece0d3a3b)
Conflicts:
	configmgr/source/access.cxx

Change-Id: If0b413a4fdd93465074548c7ea5451288c1d12aa
Reviewed-on: https://gerrit.libreoffice.org/6961
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>
resolved fdo#66564 calculate formula cell once if AutoCalc disabled

Was lost with 2ce72093cdc68e60fb06ddd4358e0bc7fc8c63a9 and previous
restructuring.

(cherry picked from commit 2212051e792cb5f51f4191afe83c85fc3730a087)

Backported.

Change-Id: Ie4c8bdb287b56448406c873840c26ec4759de375
Reviewed-on: https://gerrit.libreoffice.org/6964
Reviewed-by: Kohei Yoshida <libreoffice@kohei.us>
Tested-by: Kohei Yoshida <libreoffice@kohei.us>
EMF+: Fill line cap object if EmfPlusCustomLineCapDataFillPath is set.

Change-Id: I7b53a8f18e1fb24b1ae0322bdf0980e431a0725f
(cherry picked from commit 131f3230d98f24faf57d9404e333cb1fb183345b)
Reviewed-on: https://gerrit.libreoffice.org/6960
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>