update the symbol files to reflect current state

debian/libapt-inst1.5.symbols

@@ -81,12 +81,8 @@ libapt-inst.so.1.5 libapt-inst1.5 #MINVER#
  (c++|optional)"vtable for pkgCache::VerIterator@Base" 0.8.0
  (c++|optional)"vtable for pkgCache::Iterator<pkgCache::Dependency, pkgCache::DepIterator>@Base" 0.8.0
  (c++|optional)"vtable for pkgCache::Iterator<pkgCache::Version, pkgCache::VerIterator>@Base" 0.8.0
-### gcc-4.4 specific
-# (c++|regex|optional=std)"^char\* std::[^ ]+<.+ >::_.+@Base$" 0.8.0
-# (c++|optional=std)"std::basic_string<char, std::char_traits<char>, std::allocator<char> >& std::basic_string<char, std::char_traits<char>, std::allocator<char> >::append<unsigned char*>(unsigned char*, unsigned char*)@Base" 0.8.0
-### gcc-4.6 specific
+### gcc artefacts
  (c++|optional=std)"std::vector<APT::Configuration::Compressor, std::allocator<APT::Configuration::Compressor> >::~vector()@Base" 0.8.12
- (c++|optional=std)"std::basic_string<char, std::char_traits<char>, std::allocator<char> >& std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_replace_dispatch<unsigned char*>(__gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, unsigned char*, unsigned char*, std::__false_type)@Base" 0.8.0
 ### try to ignore std:: template instances
  (c++|regex|optional=std)"^std::basic_string<.+ >\(.+\)@Base$" 0.8.0
  (c++|regex|optional=std)"^typeinfo name for std::iterator<.*>@Base$" 0.8.0