install gcc, g++ as gcc and g++ instead of cc, c++ and create links
to the latter on non-clang architectures and make sure we build gcc
with itself because clang won't be able to build it

ok naddy@

Build gcc as non-PIE. PIE breaks precompiled headers and causes a serious
performance hit on some architectures (almost 20% on hppa, more than 25% on
sparc64). And there are no real benefits associ

Build gcc as non-PIE. PIE breaks precompiled headers and causes a serious
performance hit on some architectures (almost 20% on hppa, more than 25% on
sparc64). And there are no real benefits associated with ASLR for a compiler.

ok deraadt@

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Add support for PIE-by-default in both ld and gcc. This is a completely
different approach than the one taken in kurt@'s original diff, but deemed
better after discussion and diff exchange with kett

Add support for PIE-by-default in both ld and gcc. This is a completely
different approach than the one taken in kurt@'s original diff, but deemed
better after discussion and diff exchange with kettenis@ and matthew@.

Lots of feedback by kettenis@ and matthew@, prodding and encouragement by
deraadt@.

ok kettenis@ matthew@

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Tweak definition and some uses of PREFIX macro to avoid including
doubled slashes in compiled in paths.

ok deraadt@, cross-compilation testing and ok drahn@

GCC4 cross compilation support under OpenBSD.

Makefile.inc also has to be included from here

Import a BSD make based infrastructure for building gcc, based on the
same solution from FreeBSD.
Don't even try to build it at the moment. This is commited so people can
work on it in tree.