Bug #3522251. SCI_NEWLINE with multiple selections now only replaces the main selection.
Bug #3522251. SCI_NEWLINE with multiple selections now only replaces the
main selection.

rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror