remove unused #define SQL_COLUMN_NOTFOUND

Change-Id: Ic8914484c23c586036280bdf12a3fef3128d03ff
remove some STRING_NOTFOUND usage

from old, probably dead code. Completely untested. But at
least it's not in my grep results anymore.

Change-Id: I9d917d0558bcab25a48fa36140beaa92150b62c9
convert xub_StrLen->sal_Int32 in doctxm.cxx

Change-Id: I0981631d516e18c065c3f5fcc1a049119b47ec76
remove condition that cannot be hit

GetFunctionEnd cannot return STRING_NOTFOUND

Change-Id: Ic9abee0ea77789e01acedf57c6c13edb0a5c08d9
remove usage of STRING_NOTFOUND in formula.cxx

and tidy up the method a little

Change-Id: I408fd96286749ec9e3743dbdad8cf424a7bb9035
convert SwInterHyphInfo from xub_StrLen->sal_Int32

Change-Id: Ie5a877fb90c360506f05d0417524966e137e5d77
STRING_NOTFOUND is no more

Change-Id: Ia8937e07786c497c5cb8485fa161fd68231c17f8