lighttpd: include mod_h2 in base package

The next version of lighttpd will move HTTP/2 support from the lighttpd
base executable into a separate module: mod_h2

Include patch to do so now, and update packaging to handle it.

HTTP/2 support is enabled by default since lighttpd 1.4.59, but if
HTTP/2 support is explicitly disabled in the configuration, then mod_h2
will not be loaded, thereby reducing lighttpd memory use.

Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>

net/lighttpd/Makefile

@@ -177,7 +177,7 @@ MESON_ARGS += \
 	-Dwith_zlib=$(if $(CONFIG_PACKAGE_lighttpd-mod-deflate),enabled,disabled) \
 	-Dwith_zstd=disabled
 
-BASE_MODULES:=dirlisting
+BASE_MODULES:=dirlisting h2
 
 define Package/lighttpd/conffiles
 /etc/lighttpd/lighttpd.conf
@@ -307,8 +307,9 @@ server.modules += ( \"mod_$(1)\" )" $$(1)/etc/lighttpd/conf.d/$(4)-$(1).conf ; \
   $$(eval $$(call BuildPackage,lighttpd-mod-$(1)))
 endef
 
-# included in BASE_MODULES:=dirlisting
+# included in BASE_MODULES:=dirlisting h2
 #$(eval $(call BuildPlugin,dirlisting,dirlisting,,30))
+#$(eval $(call BuildPlugin,h2,HTTP/2,,30))
 
 # included in base lighttpd executable;
 # no longer loaded as separate dynamic modules

net/lighttpd/patches/030-mod_h2-HTTP-2-separate-mod.patch

@@ -0,0 +1,87 @@
+From 2892a7bf3f8ce92f41134fab25fbc2057f4a36bf Mon Sep 17 00:00:00 2001
+From: Glenn Strauss <gstrauss@gluelogic.com>
+Date: Wed, 10 May 2023 19:06:42 -0400
+Subject: [PATCH] [mod_h2] HTTP/2 separate module; no longer builtin
+
+---
+ src/CMakeLists.txt | 3 ---
+ src/Makefile.am    | 9 +++------
+ src/SConscript     | 4 +---
+ src/meson.build    | 3 ---
+ 4 files changed, 4 insertions(+), 15 deletions(-)
+
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -922,10 +922,7 @@ set(SERVER_SRC
+ 	response.c
+ 	connections.c
+ 	h1.c
+-	h2.c
+ 	sock_addr_cache.c
+-	ls-hpack/lshpack.c
+-	algo_xxhash.c
+ 	fdevent_impl.c
+ 	http_range.c
+ 	network.c
+--- a/src/Makefile.am
++++ b/src/Makefile.am
+@@ -70,12 +70,10 @@ common_src=base64.c buffer.c burl.c log.
+ 
+ common_src += fdevent_win32.c fs_win32.c
+ 
+-src = server.c response.c connections.c h1.c h2.c \
++src = server.c response.c connections.c h1.c \
+ 	sock_addr_cache.c \
+ 	network.c \
+ 	network_write.c \
+-	ls-hpack/lshpack.c \
+-	algo_xxhash.c \
+ 	fdevent_impl.c \
+ 	http_range.c \
+ 	data_config.c \
+@@ -428,6 +426,8 @@ lighttpd_LDADD = \
+   $(FAM_LIBS) $(LIBEV_LIBS) $(LIBUNWIND_LIBS)
+ lighttpd_LDFLAGS = -export-dynamic
+ 
++lighttpd_SOURCES += h2.c ls-hpack/lshpack.c algo_xxhash.c
++lighttpd_LDADD += $(XXHASH_LIBS)
+ if BUILD_WITH_MAXMINDDB
+ lighttpd_SOURCES += mod_maxminddb.c
+ lighttpd_LDADD += $(MAXMINDDB_LIB)
+@@ -489,9 +489,6 @@ lighttpd_SOURCES += mod_wolfssl.c
+ lighttpd_CPPFLAGS += $(WOLFSSL_CFLAGS)
+ lighttpd_LDADD += $(WOLFSSL_LIBS)
+ endif
+-#(until switch to mod_h2)
+-#lighttpd_SOURCES += h2.c ls-hpack/lshpack.c algo_xxhash.c
+-#lighttpd_LDADD += $(XXHASH_LIBS)
+ 
+ else
+ 
+--- a/src/SConscript
++++ b/src/SConscript
+@@ -75,10 +75,8 @@ common_src = Split("base64.c buffer.c bu
+ 	ck.c \
+ ")
+ 
+-src = Split("server.c response.c connections.c h1.c h2.c \
++src = Split("server.c response.c connections.c h1.c \
+ 	sock_addr_cache.c \
+-	ls-hpack/lshpack.c \
+-	algo_xxhash.c \
+ 	fdevent_impl.c \
+ 	http_range.c \
+ 	network.c \
+--- a/src/meson.build
++++ b/src/meson.build
+@@ -560,10 +560,7 @@ main_src = files(
+ 	'connections.c',
+ 	'data_config.c',
+ 	'h1.c',
+-	'h2.c',
+ 	'sock_addr_cache.c',
+-	'ls-hpack/lshpack.c',
+-	'algo_xxhash.c',
+ 	'fdevent_impl.c',
+ 	'http_range.c',
+ 	'network_write.c',