gdbserver cross compile

["Harris, Jeff" <JeffH@aiinet.com>]

I was having problems with getting gdbserver to correctly detect whether it
is being built with a cross-compiler or not.  I was trying to cross-compile
from i386 (RedHat 7.2) to i386(gcc 3.2.3 and glibc 2.3.2).  The configure
script for gdbserver looks to have been created with an old version of
autoconf (2.13 I believe).  The mechanism it uses to detect a cross compiler
simply tries to compile a simple program and run it.  If it runs, it decides
it isn't cross-compiling otherwise it is cross-compiling.  

My problem was that while this program runs with the cross-compiler, the
program to detect whether standard C headers are used does not run.  As a
result, the STDC_HEADERS #define is not set and ultimately a compile error
to occur.

There doesn't seem to be a way to override the configure script's detection
mechanism.  However, if I rerun autoconf (version 2.53) in the gdbserver
directory, the resulting configure script is updated to include better
logic.  Basically, it compares the build and host options to configure to
determine its cross-compile state.  This mechanism works for me since I have
different values for these options.

Is an updated version of configure something that would be considered for
GDB 5.4?  

Thanks,
Jeff