Add Alpha and proper x86 support to GCC 2.95.2.

[ Functionally speaking, this covers revs 1.{2,3} ]

contrib/gcc/configure

@@ -3765,9 +3765,9 @@ for machine in $build $host $target; do
 	i[34567]86-*-solaris2*)
 		xm_file="xm-siglist.h xm-alloca.h ${xm_file}"
 		xm_defines="USG POSIX SMALL_ARG_MAX"
-		if test x$stabs = xyes
-		then
-			tm_file=i386/sol2dbg.h
+		if test x$gas = xyes; then
+			# Only needed if gas does not support -s
+			tm_file=i386/sol2gas.h
 		else
 			tm_file=i386/sol2.h
 		fi
@@ -5423,12 +5423,21 @@ for machine in $build $host $target; do
 		fi
 		;;
         sparc-hal-solaris2*)
-                xm_file=sparc/xm-sol2.h
+                xm_file="xm-siglist.h sparc/xm-sysv4.h sparc/xm-sol2.h"
+                xm_defines="USG POSIX"
                 tm_file="sparc/sol2.h sparc/hal.h"
                 tmake_file="sparc/t-halos sparc/t-sol2"
                 xmake_file=sparc/x-sysv4
                 extra_parts="crt1.o crti.o crtn.o gmon.o crtbegin.o crtend.o"
-                broken_install=yes
+                case $machine in
+                *-*-solaris2.[0-4])
+                        float_format=i128
+                ;;
+                *)
+                        float_format=none
+                        ;;
+                esac
+		thread_file='solaris'
                 ;;
 	sparc-*-solaris2*)
 		if test x$gnu_ld = xyes