Use short temp file for downloaded plugin ZIPs
Use short temp file for downloaded plugin ZIPs

If URL for plugin contains parameters, temporary file path can be too
long for the file system. Thus use a short temporary file name.

drmacro/dita-ot,doctales/dita-ot,doctales/dita-ot,jelovirt/muuntaja,dita-ot/dita-ot,dita-ot/dita-ot,queshaw/dita-ot,robander/dita-ot,zanyants/dita-ot,dita-ot/dita-ot,dita-ot/dita-ot,jelovirt/muuntaja,infotexture/dita-ot,doctales/dita-ot,robander/dita-ot,Hasimir/dita-ot,robander/dita-ot,queshaw/dita-ot,zanyants/dita-ot,infotexture/dita-ot,shaneataylor/dita-ot,drmacro/dita-ot,queshaw/dita-ot,Hasimir/dita-ot,infotexture/dita-ot,drmacro/dita-ot,shaneataylor/dita-ot,eerohele/dita-ot,eerohele/dita-ot,drmacro/dita-ot,Hasimir/dita-ot,Hasimir/dita-ot,queshaw/dita-ot,dita-ot/dita-ot,zanyants/dita-ot,shaneataylor/dita-ot,eerohele/dita-ot,infotexture/dita-ot,shaneataylor/dita-ot,drmacro/dita-ot,robander/dita-ot,infotexture/dita-ot,jelovirt/muuntaja,eerohele/dita-ot,robander/dita-ot,shaneataylor/dita-ot,zanyants/dita-ot,doctales/dita-ot