versioner: extract strict warnings out of -v into its own flag.

Bug: None
Test: versioner -v; versioner -s
Change-Id: I8f6ac7064c6f05de0811677f7fcfce929a2568c1
diff --git a/tools/versioner/src/versioner.h b/tools/versioner/src/versioner.h
index 97b1509..a5f2c7d 100644
--- a/tools/versioner/src/versioner.h
+++ b/tools/versioner/src/versioner.h
@@ -22,6 +22,7 @@
 #include <unordered_map>
 #include <unordered_set>
 
+extern bool strict;
 extern bool verbose;
 extern bool add_include;