With e0d94237 the dependency on gcc
is gone, so we should be able to build on all cygwin flavours again
for all Windows arch targets.

Well almost - we still have windres on cygwin32 only able to produce
pe-i386 targets, so let's exclude the case cyg32 and WIN64 for the
moment.

Change-Id: Ibe7f967585995586985177d4c36cc33d9850d9de
Reviewed-on: https://gerrit.libreoffice.org/45422Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>