Include RE2 library

third_party/re2/testinstall.cc

Index: third_party/re2/testinstall.cc
diff --git a/third_party/re2/testinstall.cc b/third_party/re2/testinstall.cc
new file mode 100644
index 0000000000000000000000000000000000000000..40b7a8ab214fbf440c80f834e8519ca026a38666
--- /dev/null
+++ b/third_party/re2/testinstall.cc
@@ -0,0 +1,20 @@
+#include <re2/re2.h>
+#include <re2/filtered_re2.h>
+#include <stdio.h>
+
+using namespace re2;
+
+int main(void) {
+	FilteredRE2 f;
+	int id;
+	f.Add("a.*b.*c", RE2::DefaultOptions, &id);
+	vector<string> v;
+	f.Compile(&v);
+
+	if(RE2::FullMatch("axbyc", "a.*b.*c")) {
+		printf("PASS\n");
+		return 0;
+	}
+	printf("FAIL\n");
+	return 2;
+}