With --disable-pch the original hack from
f091259a "convert SfxEnumItem to type-safe
template class" doesn't happen to work:  When linking sd, the occurrences of
SfxEnumItem<sal_uInt16> in sd/inc/sdattr.hxx clash with those from editeng
(where LanguageType is a typedef for sal_uInt16) and svl (as the respective
include files from editeng and svl happen to not be included).  For whatever
reason, the explicit instantiation declaration without a __declspec(...) in
include/svl/eitem.hxx doesn't seem to make a difference (at least with MSVC 2015
Update 3).

Change-Id: I51b5943fe19a7184db9414192c6364f7c26b79eb
Reviewed-on: https://gerrit.libreoffice.org/34903Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Stephan Bergmann <sbergman@redhat.com>