New configuration scheme changes, round 1.

- Configuration file 'xbps-conf.plist' has been splitted off into
  two files: conf.plist and repositories.plist. By default they
  are stored in etc/xbps.
- Changed some members in xbps_handle struct, mostly to make it easy
  to change its value in {cache,root}dir and conffile.
- Made xbps_init() release proplib objects as soon as we don't need
  them, that way it uses 35% less of memory or in some cases even more.

There will be another commit that will implement to read new virtualpkg
settings by the user, as specified in:

	http://code.google.com/p/xbps/issues/detail?id=12

bin/xbps-bin/check.c

@@ -155,7 +155,8 @@ check_pkg_integrity(const char *pkgname)
 				    "empty target object!\n", pkgname, file);
 				continue;
 			}
-			path = xbps_xasprintf("%s/%s", xhp->rootdir, file);
+			path = xbps_xasprintf("%s/%s",
+			    prop_string_cstring_nocopy(xhp->rootdir), file);
 			if (path == NULL)
 				abort();
 
@@ -168,8 +169,9 @@ check_pkg_integrity(const char *pkgname)
 			}
 
 			free(path);
-			if (strcmp(xhp->rootdir, "/") && strstr(buf, xhp->rootdir))
-				path = buf + strlen(xhp->rootdir);
+			if (!prop_string_equals_cstring(xhp->rootdir, "/") &&
+			    strstr(buf, prop_string_cstring_nocopy(xhp->rootdir)))
+				path = buf + prop_string_size(xhp->rootdir);
 			else
 				path = buf;
 
@@ -201,7 +203,8 @@ check_pkg_integrity(const char *pkgname)
 
 		while ((obj = prop_object_iterator_next(iter))) {
 			prop_dictionary_get_cstring_nocopy(obj, "file", &file);
-			path = xbps_xasprintf("%s/%s", xhp->rootdir, file);
+			path = xbps_xasprintf("%s/%s",
+			    prop_string_cstring_nocopy(xhp->rootdir), file);
 			if (path == NULL) {
 				prop_object_iterator_release(iter);
 				abort();
@@ -250,7 +253,8 @@ check_pkg_integrity(const char *pkgname)
 
 		while ((obj = prop_object_iterator_next(iter))) {
 			prop_dictionary_get_cstring_nocopy(obj, "file", &file);
-			path = xbps_xasprintf("%s/%s", xhp->rootdir, file);
+			path = xbps_xasprintf("%s/%s",
+			    prop_string_cstring_nocopy(xhp->rootdir), file);
 			if (path == NULL) {
 				prop_object_iterator_release(iter);
 				abort();

bin/xbps-bin/find-files.c

@@ -81,8 +81,8 @@ find_files_in_packages(const char *pattern)
 	unsigned int i, count;
 
 	xhp = xbps_handle_get();
-	path = xbps_xasprintf("%s/%s/metadata", xhp->rootdir,
-	    XBPS_META_PATH);
+	path = xbps_xasprintf("%s/%s/metadata",
+	    prop_string_cstring_nocopy(xhp->rootdir), XBPS_META_PATH);
 	if (path == NULL)
 		return -1;
 

bin/xbps-bin/main.c

@@ -285,10 +285,15 @@ main(int argc, char **argv)
 		xhp->xbps_unpack_cb = unpack_progress_cb_verbose;
 	else
 		xhp->xbps_unpack_cb = unpack_progress_cb;
-	xhp->rootdir = rootdir;
-	xhp->cachedir = cachedir;
+
+	if (rootdir)
+		xhp->rootdir = prop_string_create_cstring(rootdir);
+	if (cachedir)
+		xhp->cachedir = prop_string_create_cstring(cachedir);
+	if (conffile)
+		xhp->conffile = prop_string_create_cstring(conffile);
+
 	xhp->flags = flags;
-	xhp->conffile = conffile;
 	xhp->install_reason_manual = install_manual;
 	xhp->install_reason_auto = install_auto;
 

bin/xbps-dgraph/main.c

@@ -442,7 +442,7 @@ int
 main(int argc, char **argv)
 {
 	prop_dictionary_t plistd, confd = NULL;
-	struct xbps_handle xh;
+	struct xbps_handle *xhp;
 	FILE *f = NULL;
 	char *outfile = NULL;
 	const char *conf_file = NULL, *rootdir = NULL;
@@ -484,9 +484,13 @@ main(int argc, char **argv)
 		usage();
 
 	/* Initialize libxbps */
-	memset(&xh, 0, sizeof(xh));
-	xh.rootdir = rootdir;
-	xbps_init(&xh);
+	xhp = xbps_handle_alloc();
+	if (xhp == NULL)
+		die("failed to allocate resources");
+	if (rootdir)
+		xhp->rootdir = prop_string_create_cstring(rootdir);
+	if (xbps_init(xhp))
+		die("failed to initialize libxbps");
 
 	/*
 	 * Output file will be <pkgname>.dot if not specified.

bin/xbps-repo/main.c

@@ -139,9 +139,12 @@ main(int argc, char **argv)
 	xhp->xbps_transaction_err_cb = transaction_err_cb;
 	xhp->xbps_fetch_cb = fetch_file_progress_cb;
 	xhp->xfcd->cookie = &xfer;
-	xhp->rootdir = rootdir;
-	xhp->cachedir = cachedir;
-	xhp->conffile = conffile;
+	if (rootdir)
+		xhp->rootdir = prop_string_create_cstring(rootdir);
+	if (cachedir)
+		xhp->cachedir = prop_string_create_cstring(cachedir);
+	if (conffile)
+		xhp->conffile = prop_string_create_cstring(conffile);
 
 	if ((rv = xbps_init(xhp)) != 0) {
 		xbps_error_printf("xbps-repo: couldn't initialize library: %s\n",

bin/xbps-uhelper/main.c

@@ -156,8 +156,10 @@ main(int argc, char **argv)
 	xhp->debug = debug;
 	xhp->xbps_fetch_cb = fetch_file_progress_cb;
 	xhp->xfcd->cookie = &xfer;
-	xhp->rootdir = rootdir;
-	xhp->conffile = conffile;
+	if (rootdir)
+		xhp->rootdir = prop_string_create_cstring(rootdir);
+	if (conffile)
+		xhp->conffile = prop_string_create_cstring(conffile);
 
 	if ((rv = xbps_init(xhp)) != 0) {
 		xbps_error_printf("xbps-uhelper: failed to "