gsql: Fix escaping of quotes in JSON

Double quotes weren't properly escaped in strings due to
a bug in Gson.  This was fixed in Gson 1.4, so upgrade.

Bug: issue 528
Change-Id: I247ba4c4ed657f22a3b0c067f5a764c4aba46d5b
Signed-off-by: Shawn O. Pearce <sop@google.com>
1 file changed