build-sys: restore make distcheck's configure flags

They got lost with --enable-most-builds in 08b1c219.

Note additionally we add --enable-gtk-doc but don't add
--with-systemd because there are still many systems where systemd
is not available.

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>

Makefile.am

@@ -161,12 +161,15 @@ checkxalloc:
 checkdecl:
 	@ $(top_srcdir)/tools/checkdecl.sh
 
-ENABLE_ALL = --enable-static-programs --enable-most-builds
-DISTCHECK_CONFIGURE_FLAGS = --disable-use-tty-group \
-			    --disable-silent-rules $(ENABLE_ALL) \
-			    --with-bashcompletiondir=$$dc_install_base/$(bashcompletiondir) \
-			    --with-systemdsystemunitdir=$$dc_install_base/$(systemdsystemunitdir)
-
+DISTCHECK_CONFIGURE_FLAGS = \
+	--disable-use-tty-group \
+	--disable-silent-rules \
+	--enable-all-programs \
+	--enable-static-programs \
+	--enable-gtk-doc \
+	--with-python \
+	--with-bashcompletiondir=$$dc_install_base/$(bashcompletiondir) \
+	--with-systemdsystemunitdir=$$dc_install_base/$(systemdsystemunitdir)
 
 BUILT_SOURCES = .version
 .version: