fixed the mac bug again, because last change was incompatible with debian changelog format

ax_init_standard_project.m4

@@ -124,7 +124,7 @@ AC_DEFUN([AX_INIT_STANDARD_PROJECT], [
   AX_SUBST(DISTRO)
   BUILD_NUMBER=${BUILD_NUMBER:-1}
   AX_SUBST(BUILD_NUMBER)
-  BUILD_DATE=$(date +"%Y-%m-%d %H:%M %Z")
+  BUILD_DATE=$(LANG= date +"%a, %d %B %Y %H:%M:%S %z")
   AX_SUBST(BUILD_DATE)
   if test -f "${PROJECT_NAME}-logo.png"; then
      PROJECT_LOGO="${PROJECT_NAME}-logo.png"

bootstrap.sh

@@ -216,7 +216,7 @@ done
 
 HEADER='## @id '"\$Id\$"'
 #
-# This file has been added by '${MY_NAME}' on '$(date +"%Y-%m-%d %H:%M %Z")'
+# This file has been added by '${MY_NAME}' on '$(LANG= date +"%a, %d %B %Y %H:%M:%S %z")'
 # Feel free to change it or even remove and rebuild it, up to your needs
 #
 ##       1         2         3         4         5         6         7         8