5.2-RC installworld failure

Following the invitation here, I updated my 5.1-Desktop to 5.2-RC last
night. There's two things I noticed so far:

- I experienced a spontaneous reboot while still under 5.1. I tried
  doing the buildworld with /usr/obj being a 512MB Ramdisk (md), and
  of course it eventually filled up. When I did a

    cp -r /usr/obj /usr/obj2

  so I could resume the buildworld with the obj files being on the HD,
  the machine locked and rebootet. Unfortunately, as I wasi n X, I did
  not see any /dev/console messages.
  Well. This might not exactly be a 5.2 issue, thought I'd mention it
  nontheless.

- I experienced an installworld failure while installing bin/csh. More
  specifically, while doing the following:

    ===> bin/csh
    cd: can't cd to /usr/src/bin/csh/../../contrib/tcsh/nls/et_EE.ISO8859-15
    install -s -o root -g wheel -m 555   csh /bin
    install -o root -g wheel  -m 444 /usr/src/bin/csh/../../contrib/tcsh/complete.tcsh /usr/src/bin/csh/../../contrib/tcsh/csh-mode.el /usr/share/examples/tcsh
    gencat -new et_EE.ISO8859-15.cat et_EE.ISO8859-15.msg
    gencat:No such file or directory
    *** Error code 1

  Commenting out the following in /usr/src/bin/csh/Makefile let me
  finish the buildworld successfully:

    .for catalog in ${CATALOGS}
    NLS+=           ${catalog:C/.*://}
    NLSSRCDIR_${catalog:C/.*://}= ${TCSHDIR}/nls/${catalog:C/:.*//}
    NLSSRCFILES_${catalog:C/.*://}!= cd ${NLSSRCDIR_${catalog:C/.*://}}; echo set[0-9]*
    .endfor

  For reference, maybe the contents of the following two directories
  are of interest:

    root_at_merlin/usr/src/contrib/tcsh/nls> ls
    ./         Makefile   french/    italian/   russian/
    ../        et/        german/    ja/        spanish/
    C/         finnish/   greek/     pl/        ukrainian/
    root_at_merlin/usr/src/contrib/tcsh/nls> ls et
    ./       set12    set17    set21    set26    set31    set8
    ../      set13    set18    set22    set27    set4     set9
    set1     set14    set19    set23    set29    set5     sh.core
    set10    set15    set2     set24    set3     set6
    set11    set16    set20    set25    set30    set7

Ok, that's it so far. I'm very much looking forward to testdriving this
some more.

Greetings
Benjamin Lutz