Merged revision(s) 46396, 46404, 46414, 46441-46442 from trunk:
TAChart: Implement a windows-only solution to copying a chart to the clipboard as windows metafile. Update wmf demo. (see: http://forum.lazarus.freepascal.org/index.php/topic,25985.msg158945/topicseen.html#new)
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TAChart: Introduce class helper for saving charts as metafiles and for copying them as metafiles to the clipboard.
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Grids: Fix AutoAddRow when deleting the last row (issue #0026189) patch by Mike Thompson.

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LCL: fixed PolyBezierArcPoints in graphmath for negative values.Patch by Giuliano Colla. issue #26792

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TAChart: Modify candlestick plot to allow for same color of body and tails
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git-svn-id: http://svn.freepascal.org/svn/lazarus/branches/fixes_1_2@46506 4005530d-fff6-0310-9dd1-cebe43e6787f