tag & tag_pool: migrate from pthread to glib threads

src/main.c

@@ -52,6 +52,7 @@
 #include "os_compat.h"
 #include "dirvec.h"
 #include "songvec.h"
+#include "tag_pool.h"
 
 #ifdef ENABLE_ARCHIVE
 #include "archive_list.h"
@@ -273,6 +274,7 @@ int main(int argc, char *argv[])
 	idle_init();
 	dirvec_init();
 	songvec_init();
+	tag_pool_init();
 	initConf();
 
 	parseOptions(argc, argv, &options);
@@ -387,6 +389,7 @@ int main(int argc, char *argv[])
 	music_pipe_free();
 	cleanUpPidFile();
 	finishConf();
+	tag_pool_deinit();
 	songvec_deinit();
 	dirvec_deinit();
 	idle_deinit();