Пакет custom-libquadmath4.8-devel: Информация

- Libraries of all versions of the custom-gcc can be found in the same place;
- Enabled compatibility mode - libstdc++, libatomic1, libgcc1, libgomp1,
  libitm1, libobjc4, libtsan0 and libquadmath0 are not included
  as they come with gcc5;
- Detection of 'provides' for the custom libraries.

- C7 custom port:
  + No Ada, no Fortran, no Java, no Go;
  + Libraries and most executables can be found only by
    absolute paths which include GCC version;
  + custom-libstdc++6 and custom-libgcc1 must not be used in runtime
    (maintainers should set RPATH to use them in exceptional cases).

- Changed compress_method to xz.