Upgrade jsoncpp to version 1.0.0 to match the copy used by Skia's testing tools.

This mirrors the contents of the upstream repository at...
https://github.com/open-source-parsers/jsoncpp/commit/7165f6ac4c482e68475c9e1dac086f9e12fff0d0

Bug: 17997234
Change-Id: I87a8312f9d030e5027f4ca5b1568f8374a856632
diff --git a/test/data/test_real_05.expected b/test/data/test_real_05.expected
index 949fd8f..7a46093 100644
--- a/test/data/test_real_05.expected
+++ b/test/data/test_real_05.expected
@@ -1,3 +1,4 @@
+// 1234567.8
 .=1234567.8