* alpha/linux.h: Define __gnu_linux__ wherever __linux__ is
defined, and __gnu_hurd__ wherever __GNU__ is defined.
* arm/linux-elf.h: Likewise.
* cris/aout.h: Likewise.
* cris/linux.h: Likewise.
* i370/linux.h: Likewise.
* i386/gnu.h: Likewise.
* i386/linux-aout.h: Likewise.
* i386/linux-oldld.h: Likewise.
* i386/linux.h: Likewise.
* i386/linux64.h: Likewise.
* ia64/linux.h: Likewise.
* m68k/linux-aout.h: Likewise.
* m68k/linux.h: Likewise.
* mips/linux.h: Likewise.
* pa/pa-linux.h: Likewise.
* pj/linux.h: Likewise.
* rs6000/sysv4.h: Likewise.
* s390/linux.h: Likewise.
* sh/linux.h: Likewise.
* sparc/linux-aout.h: Likewise.
* sparc/linux.h: Likewise.
* sparc/linux64.h: Likewise.
* xtensa/linux.h: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@52279
138bc75d-0d04-0410-961f-
82ee72b054a4