Static naming of po file

The po file should not be named c55 if we're in ∆. But since it is not
exposed at installation time, we don't actually need its name to be
based on the project name at all, so just call it minetest.po

src/CMakeLists.txt

@@ -305,7 +305,7 @@ if (USE_GETTEXT)
 			COMMENT "mo-update [${LOCALE}]: Creating locale directory.")
 
 		set(MO_FILE_PATH "${MO_BUILD_PATH}/${PROJECT_NAME}.mo")
-		set(PO_FILE_PATH "${GETTEXT_PO_PATH}/${LOCALE}/minetest-c55.po")
+		set(PO_FILE_PATH "${GETTEXT_PO_PATH}/${LOCALE}/minetest.po")
 
 		add_custom_command(
 			OUTPUT ${MO_FILE_PATH}

updatelocales.sh

@@ -1,5 +1,5 @@
 #! /bin/bash
-xgettext -n -o minetest-c55.pot ./src/*.cpp ./src/*.h
-msgmerge -U ./po/de/minetest-c55.po minetest-c55.pot
-msgmerge -U ./po/fr/minetest-c55.po minetest-c55.pot
-rm minetest-c55.pot
+xgettext -n -o minetest.pot ./src/*.cpp ./src/*.h
+msgmerge -U ./po/de/minetest.po minetest.pot
+msgmerge -U ./po/fr/minetest.po minetest.pot
+rm minetest.pot