libgfortran build failure

[David Edelsohn]

	After the aclocal/automake regeneration, I now am seeing a
bootstrap failure on AIX because the generated Makefile is not
substituting a variable.  My generated Makefile looks like:

CC = /tmp/20060801/./gcc/xgcc -B/tmp/20060801/./gcc/ -B/farm/dje/install/powerpc-ibm-aix5.2.0.0-20060801/powerpc-ibm-aix5.2.0.0/bin/ -B/farm/dje/install/powerpc-ibm-aix5.2.0.0-20060801/powerpc-ibm-aix5.2.0.0/lib/ -isystem /farm/dje/install/powerpc-ibm-aix5.2.0.0-20060801/powerpc-ibm-aix5.2.0.0/include -isystem /farm/dje/install/powerpc-ibm-aix5.2.0.0-20060801/powerpc-ibm-aix5.2.0.0/sys-include
CFLAGS = @CFLAGS@
CPP = /tmp/20060801/./gcc/xgcc -B/tmp/20060801/./gcc/ -B/farm/dje/install/powerpc-ibm-aix5.2.0.0-20060801/powerpc-ibm-aix5.2.0.0/bin/ -B/farm/dje/install/powerpc-ibm-aix5.2.0.0-20060801/powerpc-ibm-aix5.2.0.0/lib/ -isystem /farm/dje/install/powerpc-ibm-aix5.2.0.0-20060801/powerpc-ibm-aix5.2.0.0/include -isystem /farm/dje/install/powerpc-ibm-aix5.2.0.0-20060801/powerpc-ibm-aix5.2.0.0/sys-include -E

	GCC does not like @CFLAGS@ as a commandline option.  Something was
not regenerated properly.

David