insertNewRowBefore is not working

[gibito]

Repro:

1. Fill, for instance, cells A1,B2,C1,C2,C4 with arbitrary values

2. Set C3=A1_B2_C1_C2_C4

3. Call insertNewRowBefore(1,1) and observe that the formula is corrupted: =A2_B3_C3_C3_C5

[gibito]

@MarkBaker

Please see commit GerHobbelt@7d6f6e0 for an example of this bug: that commit edits the 03formulas.php example file that comes with PHPExcel to reproduce the error: the sum cell (B5=B2+B3+B4, all moved down one row by the InsertNewRowBefore() in the patched example) should read after the insert-row: B6=B3+B4+B5. However the actual result is B6=B5+B5+B5.

We have not investigated why the insertRow operation has this incorrect effect on the formula rewrite process.

[GerHobbelt]

Tested with my patched 03formulas.php: that example now works okay. Looking good.
Going to test it on our (@gibito + @GerHobbelt) application code next...

[gibito]

Fixed in fcb794e