Manually specify plugins path
Manually specify plugins path

A hack for issue #1143, where Qt failed to find the correct path for SVG plugin.
qPCR4vir/orange3,qPCR4vir/orange3,cheral/orange3,qPCR4vir/orange3,cheral/orange3,cheral/orange3,qPCR4vir/orange3,cheral/orange3,qPCR4vir/orange3,qPCR4vir/orange3,cheral/orange3,cheral/orange3