[Bug translation/90119] Merge translation msgids that only differ in placeholders

[roland.illig at gmx dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90119

--- Comment #1 from Roland Illig <roland.illig at gmx dot de> ---
Next example from avr.c:

%<-fpic%> is not supported
%<-fPIC%> is not supported
%<-fpie%> is not supported
%<-fPIE%> is not supported