build: let enum and error templates be completely generic

Don't include anything in the templates specific to the file to be built, like
#ifdef guards in headers or #include in sources.

build-aux/Makefile.am

@@ -1,7 +1,7 @@
 
 EXTRA_DIST = \
 	header-generator.xsl \
-	mm-enums-types.h.template \
-	mm-enums-types.c.template \
-	mm-enums-errors.h.template \
-	mm-enums-errors.c.template
+	mm-enums-template.h \
+	mm-enums-template.c \
+	mm-errors-template.h \
+	mm-errors-template.c

build-aux/mm-enums-template.c

@@ -1,6 +1,4 @@
 /*** BEGIN file-header ***/
-#include "ModemManager-enums.h"
-#include "mm-enums-types.h"
 
 /*** END file-header ***/
 

build-aux/mm-enums-template.h

@@ -1,6 +1,4 @@
 /*** BEGIN file-header ***/
-#ifndef __MM_ENUMS_TYPES_H__
-#define __MM_ENUMS_TYPES_H__
 
 #include <glib-object.h>
 
@@ -20,5 +18,4 @@ GType @enum_name@_get_type (void) G_GNUC_CONST;
 /*** BEGIN file-tail ***/
 G_END_DECLS
 
-#endif /* __MM_ENUMS_TYPES_H__ */
 /*** END file-tail ***/

build-aux/mm-errors-template.c

@@ -1,7 +1,4 @@
 /*** BEGIN file-header ***/
-#include "ModemManager-errors.h"
-#include "mm-errors-types.h"
-
 /*** END file-header ***/
 
 /*** BEGIN file-production ***/

build-aux/mm-errors-template.h

@@ -1,8 +1,5 @@
 /*** BEGIN file-header ***/
 
-#ifndef __MM_ERRORS_TYPES_H__
-#define __MM_ERRORS_TYPES_H__
-
 #include <glib-object.h>
 
 G_BEGIN_DECLS
@@ -23,5 +20,4 @@ GType  @enum_name@_get_type (void) G_GNUC_CONST;
 /*** BEGIN file-tail ***/
 G_END_DECLS
 
-#endif /* __MM_ERRORS_TYPES_H__ */
-/*** END file-tail ***/
+/*** END file-tail ***/