quota 4.00: do_install failed with error "msgfmt: command not found" when there is no command 'msgfmt' on the host and BB_NUMBER_THREADS is high:

[Error log:]
--------
ERROR: Logfile of failure stored in: /buildarea/build/120706182936-hrt1829-host_regression/combo1-qemuarma9-standard-glibc-std/bitbake_build/tmp/work/armv7a-vfp-neon-wrs-linux-gnueabi/quota-4.00-r0/temp/do_install/log.do_install.5175
Log data follows:
| DEBUG: SITE files ['endian-little', 'bit-32', 'arm-common', 'common-linux', 'common-glibc', 'arm-linux', 'arm-linux-gnueabi', 'common']
| DEBUG: Executing shell function do_install
| NOTE: make -j 20 STRIP= prefix=/buildarea/build/120706182936-hrt1829-host_regression/combo1-qemuarma9-standard-glibc-std/bitbake_build/tmp/work/armv7a-vfp-neon-wrs-linux-gnueabi/quota-4.00-r0/image/usr install
| for n in po/de.po po/fr.po po/pl.po; do \
|       msgfmt -o po/`basename $n .po`.mo $n; \
|       done
| /bin/sh: line 1: msgfmt: command not found
| /bin/sh: line 1: msgfmt: command not found
| /bin/sh: line 1: msgfmt: command not found
| make: *** [mo] Error 127
| ERROR: oe_runmake failed
| ERROR: Function failed: do_install (see /buildarea/build/120706182936-hrt1829-host_regression/combo1-qemuarma9-standard-glibc-std/bitbake_build/tmp/work/armv7a-vfp-neon-wrs-linux-gnueabi/quota-4.00-r0/temp/do_install/log.do_install.5175 for further information)
NOTE: package quota-4.00-r0: task do_install: Failed