Octave package database update

[<Jonas dot Hagen at metas dot ch>]

Hello,

I installed the octave package in Cygwin. This works well.

But when I install octave-signal and other octave packages,
They are not found by octave. At start, octave gives an error:
error: save: unable to open output file '/usr/share/octave/octave_packages'
error: called from:
error:   /usr/share/octave/3.8.0/m/pkg/pkg.m at line 498, column 9
error:   /usr/share/octave/site/m/startup/octaverc at line 22, column 3

This is apparently a permission issue and I have to login
as Administrator and start octave from there each time I 
install a new package.

Shouldn't  the package database update be done at
installation time of the package from the Cygwin setup,
rather than on every start of octave?
The setup has the right privileges to do so. Also, this would
make octave to start faster.

Best regards,
Jonas

System Information:
Windows 7
GNU Octave Version 3.8.0
CYGWIN_NT-6.1 1.7.28(0.271/5/3) 2014-02-09 21:06 x86_64

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