fdo#66335: fix fdo#44582 and fdo#63254 differently

This combines the following cherry picked commits:

1) fdo#66335: gtk: Revert hacks for RTL scrollbars

returning false here in getNativeControlRegion results in a fallback to
square buttons in vcl scrollbar code. But there is no problem in gtk+ backend
in this case, let's fix the problem differently.

This reverts commits 898a3e84807bccbb876e3f5583728f6d24e05e9a and
e8e82bd2109b82ddd535cdac30303249c6b62942.

(cherry picked from commit 48e1d9c7afe5c2a39d9a08d7a38f7c8ff39d8c84)

2) fdo#44582: fix scrollbars in RTL UI

(cherry picked from commit e3a801e2454eed2e61202bbacca01fe3fcc20c1d)

3) fdo#63254: correct re-mirroring formula

This patch fixes horizontal scrollbar in Calc when a sheet is RTL and UI is LTR.

When a particular window (horizontal scrollbar in this case) is RTL and a whole
UI is LTR this code used for mirroring and re-mirroring back coordinates. AFAICS
mirroring is correct, but re-mirroring is not.

The used formula comes from commit 69b684b12e42bf1396bdffca88ca880ac3c2e00b, and
the same formula appears in the other variant of overloaded function "mirror":
 mirror(sal_uInt32, const SalPoint*, SalPoint*, const OutputDevice*, bool),
but it does not affect the bug.

(cherry picked from commit a08f579e3704fbd97590f9b050d250ae445725a7)

Conflicts:
	vcl/source/control/scrbar.cxx

Change-Id: I0ccaa8998fe87403b3606828eaf3f5bd1dbe6bb4
Reviewed-on: https://gerrit.libreoffice.org/4622
Reviewed-by: Bosdonnat Cedric <cedric.bosdonnat@free.fr>
Tested-by: Bosdonnat Cedric <cedric.bosdonnat@free.fr>
Reviewed-by: Abdulaziz A Alayed <aalayed@kacst.edu.sa>
Tested-by: Abdulaziz A Alayed <aalayed@kacst.edu.sa>
Reviewed-by: Fridrich Strba <fridrich@documentfoundation.org>
Tested-by: Fridrich Strba <fridrich@documentfoundation.org>

0 files changed, 0 insertions, 0 deletions