AU: uprev the default BASE_VER value for local builds

We seem to be baking a default value in SConstruct, which became
outdated, hence this fix.

BUG=None
TEST=./build now works

Change-Id: I72de470de920582883f92f0fd8f4a195041456f3
Reviewed-on: https://gerrit.chromium.org/gerrit/45996
Commit-Queue: Gilad Arnold <garnold@chromium.org>
Tested-by: Gilad Arnold <garnold@chromium.org>
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Reviewed-by: Jay Srinivasan <jaysri@chromium.org>
diff --git a/SConstruct b/SConstruct
index 5a7ad9b..6594f24 100644
--- a/SConstruct
+++ b/SConstruct
@@ -194,7 +194,7 @@
                              -I/usr/include/libxml2""".split());
 env['CCFLAGS'] += (' ' + ' '.join(env['CFLAGS']))
 
-BASE_VER = os.environ.get('BASE_VER', '125070')
+BASE_VER = os.environ.get('BASE_VER', '180609')
 env['LIBS'] = Split("""bz2
                        crypto
                        curl