[trunk] SVG images 'printed' twice on PDF 1st page and never on following pages

Context: rev. 5316, latest Qt SDK (Qt lib 4.7.4) under Win XP and Ubuntu 11.10

Steps:
1) load or create a score with an embedded SVG image in the first page AND in one of the following pages (a small sample score is attached)
2) export the score to PDF

Results:
A) the image in the first page is 'printed' twice, once regularly and once as a very (very!!) small raster image near the top left corner of the previous occurrence; this raster image appears no larger than a dot, but by appropriate zooming appears as a second copy of the SVG image;

B) SVG images on pages after the first are not 'printed'.

A sample PDF generated from the sample score is also attached.

Analysis:

Issue A) occurs because in SvgImage::draw() (file libmscore/image.cpp, line 252) canvasPos() is used instead of pagePos(): as each page is generated, the x coord of canvasPos() increases and on following pages image as generated 'off page'.

Issue B) occurs because, after 'printing' the SVG image in lines 252-254, execution continues at line 267, where the image is printed again as a raster image.

The attached patch corrects both points; a sample PDF generated after applying the patch is also attached.

Thanks,

M.