Use TRY_RUN, not TRY_COMPILE, to test for -Olimit (on Solaris,

with Sun's cc, the compile succeeds, but the link fails).

Test for IRIX*/6* instead of for IRIX/6* -- on 64-bit IRIX systems,
uname returns IRIX64.

configure.in

@@ -115,7 +115,7 @@ AC_MSG_CHECKING(whether $CC accepts -Olimit 1500)
 AC_CACHE_VAL(ac_cv_olimit_ok,
 [ac_save_cc="$CC"
 CC="$CC -Olimit 1500"
-AC_TRY_COMPILE([], [;],
+AC_TRY_RUN([int main() { return 0; }],
   ac_cv_olimit_ok=yes,
   ac_cv_olimit_ok=no)
 CC="$ac_save_cc"])
@@ -189,7 +189,7 @@ then
 	case $ac_sys_system/$ac_sys_release in
 	AIX*) LDSHARED="ld_so_aix \$(CC)";;
 	IRIX/5*) LDSHARED="ld -shared";;
-	IRIX/6*) LDSHARED="ld $SGI_ABI -shared -all"; OPT="$OPT $SGI_ABI";;
+	IRIX*/6*) LDSHARED="ld $SGI_ABI -shared -all"; OPT="$OPT $SGI_ABI";;
 	SunOS/4*) LDSHARED="ld";;
 	SunOS/5*) LDSHARED="ld -G";;
 	hp*|HP*) LDSHARED="ld -b";;
@@ -216,7 +216,7 @@ then
 	Linux*) CCSHARED="-fpic";;
 	FreeBSD*) CCSHARED="-fpic";;
 	SCO_SV*) CCSHARED="-KPIC -dy -Bdynamic";;
-	IRIX/6*) CCSHARED="$SGI_ABI -all";;
+	IRIX*/6*) CCSHARED="$SGI_ABI -all";;
 	esac
 fi
 AC_MSG_RESULT($CCSHARED)
@@ -232,7 +232,7 @@ then
 	Linux*) LINKFORSHARED="-rdynamic";;
 	next) LINKFORSHARED="-u libsys_s";;
 	SCO_SV*) LINKFORSHARED="-Bdynamic -dy -Wl,-Bexport";;
-	IRIX/6*) LINKFORSHARED="$SGI_ABI -all";;
+	IRIX*/6*) LINKFORSHARED="$SGI_ABI -all";;
 	esac
 fi
 AC_MSG_RESULT($LINKFORSHARED)