VDR EPG2VDR Plugin

Hi,

compiling vdr-epg2vdr against gcc-10 fails with the following message:

BUILDSTDERR: In file included from service.c:8:
BUILDSTDERR: service.h:103:9: error: 'string' in namespace 'std' does
not name a type
BUILDSTDERR: 103 | std::string details;
BUILDSTDERR: | ^~~~~~
BUILDSTDERR: service.h:16:1: note: 'std::string' is defined in header
'<string>'; did you forget to '#include <string>'?
BUILDSTDERR: 15 | #include <map>
BUILDSTDERR: +++ |+#include <string>
BUILDSTDERR: 16 |
BUILDSTDERR: make: *** [Makefile:122: service.o] Error 1
BUILDSTDERR: make: *** Waiting for unfinished jobs....

This is a relatively common failure we're seeing with gcc-10 and occurs
as a result of header file cleanups within libstdc++. For example
various C++ runtime headers indirectly included <string> which in turn
included <local> and <cerrno>. Those indirect inclusions have been
eliminated which in turn forces packages to include the C++ headers they
actually need.

Fixing this is pretty simple. Something like the attached
patch.