Define ARCH_MIPS64 when building for MIPS64

Originally committed as revision 18874 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/configure b/configure
index 956bbbb..4a2234f 100755 (executable)
--- a/configure
+++ b/configure
@@ -830,6 +830,7 @@ ARCH_LIST='
     ia64
     m68k
     mips
+    mips64
     parisc
     ppc
     s390
@@ -1499,6 +1500,7 @@ case "$arch" in
     ;;
     mips64)
         arch="mips"
+        subarch="mips64"
         enable fast_64bit
     ;;
     parisc|hppa)