This is a combination of 3 commits.

Introduce ScSetStringParam::mbCheckLinkFormula

(cherry picked from commit 5a93c51e)

Handle ScSetStringParam::mbCheckLinkFormula in ScColumn::ParseString()

(cherry picked from commit 271d9ebf)

 Conflicts:
	sc/source/core/data/column3.cxx

ScSetStringParam::mbCheckLinkFormula for HTML and RTF import

(cherry picked from commit 98c0bd7f)

d6b0705140baacdb872560f7031efaf0c03f0e00
7cf7cf12142322cbffd5160e9a8dce55efd36be5

Change-Id: I2028fc53f9778606778cd8629611752acd3f1a1c
Reviewed-on: https://gerrit.libreoffice.org/49708Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>