#i124422# fix default arguments in friend declarations

chapter 8.3.6.4 of the C++11 standard requests that friend declarations must not
specify default unless these declarations are also definitions. Older compilers
still tolerate such constructs that were still undecided until
   http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#136
but clang>=3.4 or xcode>=5.1 now report errors for such code. The errors break the
build and so they have to be fixed. Cleaner alternatives to the fixes are possible
but for now they are intended to allow the build while being minimally invasive.


git-svn-id: https://svn.apache.org/repos/asf/openoffice/trunk@1594871 13f79535-47bb-0310-9956-ffa450edef68