Add //third_party/sqlite to dirs_to_snapshot, remove net_sql.patch

third_party/sqlite/src/tool/warnings.sh

Index: third_party/sqlite/src/tool/warnings.sh
diff --git a/third_party/sqlite/src/tool/warnings.sh b/third_party/sqlite/src/tool/warnings.sh
new file mode 100644
index 0000000000000000000000000000000000000000..5d71361138d7d19475d852bd3a69e5b80776c266
--- /dev/null
+++ b/third_party/sqlite/src/tool/warnings.sh
@@ -0,0 +1,19 @@
+#/bin/sh
+#
+# Run this script in a directory with a working makefile to check for 
+# compiler warnings in SQLite.
+#
+rm -f sqlite3.c
+make sqlite3.c
+echo '********** No optimizations.  Includes FTS4 and RTREE *********'
+gcc -c -Wshadow -Wall -Wextra -pedantic-errors -Wno-long-long -std=c89 \
+      -ansi -DHAVE_STDINT_H -DSQLITE_ENABLE_FTS4 -DSQLITE_ENABLE_RTREE \
+      sqlite3.c
+echo '********** No optimizations. ENABLE_STAT4. THREADSAFE=0 *******'
+gcc -c -Wshadow -Wall -Wextra -pedantic-errors -Wno-long-long -std=c89 \
+      -ansi -DSQLITE_ENABLE_STAT4 -DSQLITE_THREADSAFE=0 \
+      sqlite3.c
+echo '********** Optimized -O3.  Includes FTS4 and RTREE ************'
+gcc -O3 -c -Wshadow -Wall -Wextra -pedantic-errors -Wno-long-long -std=c89 \
+      -ansi -DHAVE_STDINT_H -DSQLITE_ENABLE_FTS4 -DSQLITE_ENABLE_RTREE \
+      sqlite3.c