[PATCH] Remove AIX 4.x, 5.x configuration

[David Edelsohn]

AIX 4.3, 5.1, 5.2, and 5.3 no longer are supported by IBM.  This patch
removes the GCC config.gcc stanzas and configuration files
corresponding to those AIX releases.

Thanks, David

* config.gcc [rs6000-ibm-aix4.x]: Delete.
[rs6000-ibm-aix5.1]: Delete.
[rs6000-ibm-aix5.2]: Delete.
[rs6000-ibm-aix5.3]: Delete.
* config/rs6000/aix43.h: Delete.
* config/rs6000/aix51.h: Delete.
* config/rs6000/aix52.h: Delete.
* config/rs6000/t-aix43: Delete.

Index: config.gcc
===================================================================
--- config.gcc  (revision 263505)
+++ config.gcc  (working copy)
@@ -2635,42 +2635,6 @@
        extra_options="${extra_options} rs6000/sysv4.opt"
        use_gcc_stdint=wrap
        ;;
-rs6000-ibm-aix4.[3456789]* | powerpc-ibm-aix4.[3456789]*)
-       tm_file="rs6000/biarch64.h ${tm_file} rs6000/aix.h
rs6000/aix43.h rs6000/xcoff.h rs6000/aix-stdint.h"
-       tmake_file="rs6000/t-aix43 t-slibgcc"
-       extra_options="${extra_options} rs6000/aix64.opt"
-       use_collect2=yes
-       thread_file='aix'
-       use_gcc_stdint=provide
-       extra_headers=
-       ;;
-rs6000-ibm-aix5.1.* | powerpc-ibm-aix5.1.*)
-       tm_file="rs6000/biarch64.h ${tm_file} rs6000/aix.h
rs6000/aix51.h rs6000/xcoff.h rs6000/aix-stdint.h"
-       extra_options="${extra_options} rs6000/aix64.opt"
-       tmake_file="rs6000/t-aix43 t-slibgcc"
-       use_collect2=yes
-       thread_file='aix'
-       use_gcc_stdint=wrap
-       extra_headers=
-       ;;
-rs6000-ibm-aix5.2.* | powerpc-ibm-aix5.2.*)
-       tm_file="${tm_file} rs6000/aix.h rs6000/aix52.h rs6000/xcoff.h
rs6000/aix-stdint.h"
-       tmake_file="rs6000/t-aix52 t-slibgcc"
-       extra_options="${extra_options} rs6000/aix64.opt"
-       use_collect2=yes
-       thread_file='aix'
-       use_gcc_stdint=wrap
-       extra_headers=
-       ;;
-rs6000-ibm-aix5.3.* | powerpc-ibm-aix5.3.*)
-       tm_file="${tm_file} rs6000/aix.h rs6000/aix53.h rs6000/xcoff.h
rs6000/aix-stdint.h"
-       tmake_file="rs6000/t-aix52 t-slibgcc"
-       extra_options="${extra_options} rs6000/aix64.opt"
-       use_collect2=yes
-       thread_file='aix'
-       use_gcc_stdint=wrap
-       extra_headers=altivec.h
-       ;;
 rs6000-ibm-aix6.* | powerpc-ibm-aix6.*)
        tm_file="${tm_file} rs6000/aix.h rs6000/aix61.h rs6000/xcoff.h
rs6000/aix-stdint.h"
        tmake_file="rs6000/t-aix52 t-slibgcc"