[ADD/WIP] Test out LMDB

Separate branch because I'm mainly testing reliability. Seek out
lda/Cytoplasm's lmdbwerk branch for the base upstream(with mem-moment's
Memory.c impl to apply)

src/Parsee/Data.c

@@ -27,7 +27,7 @@ ParseeInitData(XMPPComponent *comp)
     data->router = HttpRouterCreate();
     data->jabber = comp;
     data->handler = CommandCreateRouter();
-    data->db = DbOpen(data->config->db_path, 0);
+    data->db = DbOpenLMDB(data->config->db_path, 64 MB);
 
 #define X_ROUTE(path, func) do {\
                                 if (!HttpRouterAdd(data->router, path, func))\

src/include/Parsee.h

@@ -65,6 +65,12 @@ typedef struct ParseeData {
 #define MINUTES             * 60 SECONDS
 #define HOURS               * 60 MINUTES
 
+/* Size units(using 2^10 as a reference), to be used like the time units */
+#define  B                  * 1
+#define KB                  * 1024  B
+#define MB                  * 1024 KB
+#define GB                  * 1024 MB
+
 /* Initialises a Parsee config from scratch, and writes to it 
  * as JSON in the CWD. */
 extern void ParseeConfigInit(void);