added soem rebar3 stuff

rebar.config

@@ -4,8 +4,18 @@
     {"darwin", "DRV_LDFLAGS", 
         "-flat_namespace -undefined suppress $ERL_LDFLAGS"},
 
+    {"solaris", "CFLAGS",
+        "-std=c99"},
+
     {"CFLAGS", "$CFLAGS -DSQLITE_THREADSAFE=1 -DSQLITE_USE_URI -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS"}
 ]}.
 {port_specs, [
   {"priv/esqlite3_nif.so", ["c_src/esqlite3_nif.c", "c_src/queue.c", "c_src/sqlite3.c"]}
 ]}.
+
+{plugins, [pc]}.
+
+{provider_hooks,
+     [{post,
+       [{compile, {pc, compile}},
+        {clean, {pc, clean}}]}]}.