Added a sqlite and mongo database driver for the new logging

system.

sicslogquery.h

@@ -0,0 +1,35 @@
+/**
+ * This does the query execution for the new mongodb based sicslog. 
+ * 
+ * COPYRIGHT GPL
+ *
+ * Mark Koennecke, February 2016
+ */
+
+#ifndef __SICSLOGMONGO
+#define __SICSLOGMONGO
+#include <mongoc.h>
+/*
+  callback called with result data
+*/
+typedef void (*ResultCallback_t)(const bson_t *doc, void *userData);
+
+/*
+  setup of the data base connection and the default instrument
+*/
+int sicslogSetup(char *url, char *inst);
+
+/*
+  do the query. Retruns 0 on success, 1 on failure
+*/
+int sicslogQuery(int argc, char *argv[], ResultCallback_t func, void *userData);
+
+/*
+  If sicslogQuery returned or sicslogSetup returns an error, retrieve a description
+ of it. Only valid right after the error inducing call. 
+*/
+char *sicslogGetError();
+
+
+#endif
+