[committed] Darwin, libsanitizer: Update minimum supported system version.

[Iain Sandoe]

Hi,

The imported sources from 'upstream’ on the 9 branch do not
support Darwin10 or earlier, so do not enable these by default.

tested on x86_64-darwin and linux,
applied to the branch
thanks
Iain

libsanitizer/ChangeLog:

2020-03-03  Iain Sandoe  <i...@sandoe.co.uk>

        * configure.tgt (x86_64-*-darwin*, i?86-*-darwin*): Enable by
        default only for Darwin versions greater than equal to 11
        (macOS 10.7).

diff --git a/libsanitizer/configure.tgt b/libsanitizer/configure.tgt
index b241ddbfec4..424fb17a45c 100644
--- a/libsanitizer/configure.tgt
+++ b/libsanitizer/configure.tgt
@@ -60,7 +60,7 @@ case "${target}" in
                TSAN_TARGET_DEPENDENT_OBJECTS=tsan_rtl_aarch64.lo
        fi
        ;;
-  x86_64-*-darwin[1]* | i?86-*-darwin[1]*)
+  x86_64-*-darwin1[1-9]* | i?86-*-darwin1[1-9]*)
        TSAN_SUPPORTED=no
        ;;
   x86_64-*-solaris2.11* | i?86-*-solaris2.11*)