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_integer_03.expected b/test/data/test_integer_03.expected
index 37c1cb1..c7efff7 100644
--- a/test/data/test_integer_03.expected
+++ b/test/data/test_integer_03.expected
@@ -1 +1,2 @@
+// Max unsigned integer
 .=4294967295