Upgraded SQLite3 library to 3.8.8.3

Author: nickgammon

sqlite3/readme.txt

@@ -1,6 +1,6 @@
 Sqlite3 built as follows:
 
-1. Download recent version from http://www.sqlite.org/2014/sqlite-amalgamation-3080702.zip
+1. Download recent version from https://www.sqlite.org/2015/sqlite-amalgamation-3080803.zip
 
 2. Unzip the file
 
@@ -14,7 +14,7 @@ sqlite3ext.h
 3. Edit: sqlite3.c and add the following lines to the start of it:
 
 // These first few lines added by NJG
-// version 3.8.7.2
+// version 3.8.8.3
 
 # pragma warning (disable : 4018)  // signed/unsigned mismatch
 # pragma warning (disable : 4022)  // pointer mismatch for actual parameter x
@@ -23,6 +23,7 @@ sqlite3ext.h
 # pragma warning (disable : 4056)  // overflow in floating-point constant arithmetic
 # pragma warning (disable : 4090)  // 'function' : different 'volatile' qualifiers
 # pragma warning (disable : 4100)  // unreferenced formal parameter
+# pragma warning (disable : 4101)  // unreferenced local variable
 # pragma warning (disable : 4115)  // named type definition in parentheses
 # pragma warning (disable : 4127)  // conditional expression is constant
 # pragma warning (disable : 4132)  // const object should be initialized