size file does not get filled when using urxvtd

[pseyfert]

replacing urxvt by urxvtc in shellex.in (and running urxvtd) it appears the shellex size file never gets filled, and subsequently the size file doesn't get unlinked.

[pseyfert]

It seems that the perl modules get loaded once for an urxvtd session.

(steps to understand:

1. build shellex with one set of printouts in on_start
2. start urxvtd
3. rebuild shellex with other printouts
4. launch shellex
5. rebuild shellex with yet other printouts
6. launch shellex
7. observe that the printout from 3 appears
   )

Anyway, the SHELLEX_SIZE_FILE environment variable is not available in the perl
on_start function - it is an environment variable of the shellex process
(where it's actually read), not urxvtd (where it's supposed to be written).

[pseyfert]

The resulting empty shellex-size-* files don't get cleaned up in /tmp.