MJpeg Support

Added support for streaming MJpeg webcams.
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# Changes to be committed:
#	modified:   fetcamimage.cpp
#	modified:   fetcamimage.h
#	modified:   fetcaminfodialog.cpp
#	modified:   fetcaminfodialog.ui
#	modified:   fetcamselectordialog.cpp
#	modified:   fetcamselectordialog.h
#	modified:   fetcamwidgetitem.cpp
#	modified:   fetcamwidgetitem.h
#	modified:   fetloadfiledialog.cpp
#	modified:   fettuccine.xml
#	modified:   fetwidgetuiform.cpp
#	modified:   fetwidgetuiform.h
#	modified:   mainwindow.cpp
#	modified:   mainwindow.ui
#	modified:   qtc_packaging/debian_fremantle/changelog
#	modified:   qtc_packaging/debian_fremantle/control
#	modified:   qtc_packaging/debian_harmattan/changelog
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# Untracked files:
#	.qimagegrabbermjpeg.cpp.swp
#	doc/
#	icons/
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