YACC as bison -y.  In this way, we ensure that bison is being used, but
the Makefiles have macros for using bison itself and for getting bison to
act like it is traditional yacc.

llvm-svn: 10774

do the following:
% cd llvm/autoconf
% aclocal
% autoconf -o ../configure

This changes facilitaties the following:
1) It should be easier to incorporate new autoconf macros.
2) It allows for conversion to Automake (should we ever desire it).

llvm-svn: 10655

llvm-svn: 10062

llvm-svn: 10056

llvm-svn: 9849

llvm-svn: 9089

llvm-svn: 8974

1) MAP_FAILED is declared to be a pointer
2) can't include sys/mman.h before sys/types.h without getting an error :-(

llvm-svn: 8947

Added the AC_CONFIG_MAKEFILE macro to configure akefiles which don't need .in
templates.
Removed the --with-objroot option.
Added commands to configure.ac to configure all of the LLVM Makefiles.  Oof.

llvm-svn: 8378

Select /localhome/$USER when it exists.
Fix the checks for bidirectional and forward iterators so that they work with
version of GCC prior to 3.x.

llvm-svn: 7383

llvm-svn: 7255

llvm-svn: 7233