add some defines for gtk and c compiler which are generally needed.

scripts/build_config.linux-i386.sh

 #!/bin/echo dot script please source
 
 
+# Required to get backtraces otherwise many symbols are not passed to ELF linker.
+CFLAGS_args="$CFLAGS_args -rdynamic"
+
+
+# I think we need /software/acedb/gtk as the default.
+GTK_PREFIX=/software/acedb/gtk
+
+
 # This shouldn't get overwritten.
 PKG_CONFIG=$GTK_PREFIX/bin/pkg-config