improve p10 support

etc/apt/apt.conf.p10

+/*
+ * This is the main configuration file for the APT suite of tools,
+ * see apt.conf(5) for details.
+ */
+
+Dir::Etc::main "/dev/null";
+Dir::Etc::parts "/var/empty";
+Dir::Etc::SourceParts "/var/empty";
+
+Dir::Etc::sourcelist "/etc/eterbuild/apt/sources.list.p10";

etc/apt/sources.list.p10

+# Package repository URLs
+#
+# You can add [alt] after rpm for digital signature check
+
+rpm file:/var/ftp/ pub/ALTLinux/p10/branch/i586 classic
+rpm file:/var/ftp/ pub/ALTLinux/p10/branch/noarch classic
+rpm file:/var/ftp/ pub/ALTLinux/p10/branch/x86_64-i586 classic
+
+rpm [etersoft] file:/var/ftp/ pub/Etersoft/LINUX@Etersoft/p10/branch/i586 addon
+rpm [etersoft] file:/var/ftp/ pub/Etersoft/LINUX@Etersoft/p10/branch/noarch addon
+rpm [etersoft] file:/var/ftp/ pub/Etersoft/LINUX@Etersoft/p10/branch/x86_64-i586 addon

share/eterbuild/functions/alt

@@ -37,6 +37,12 @@ get_type_by_git_branch_name()
                 return
         fi
 
+        # like p10
+        if echo $1 | egrep -q "^[ptc]1[0-9].?$" ; then
+                get_altdistr_mod $1
+                return
+        fi
+
         # like cert6
         if echo $1 | egrep -q "^cert[0-9].?$" ; then
                 get_altdistr_mod $1

share/eterbuild/functions/branch

@@ -12,9 +12,9 @@ set_usebranch()
 	USEBRANCH=$BINARYREPO
 
 	[ -n "$USEBRANCH" ] || return 1
-	[ "$USEBRANCH" = "sisyphus" ] && return 1
+    [ "$USEBRANCH" = "$(get_altdistr_mod "$DISTRVERSION")" ] && return 1
 
-	# TODO: drop support of it
+	# TODO: drop support of the legacy
 	# support for obsoleted M?? names
 	OLDBRANCH=$MDISTR