[PATCH] Export dive profile to PNG image

[Sergey Starosek]

This patch addresses long-waiting bug #14.
Added "Export profile image" to the popup menu.
Export is done using pixbuf. File chooser needs some tweaking
regarding file extentions.

Not sure about proper freeing of pixbuf and pixmap. No error
handling yet.

Signed-off-by: Sergey Starosek <sergey.starosek at gmail.com>
---
 gtk-gui.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

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