chan-sccp-b: switch to git version, update patch

- As suggested by upstream in issue #167, move from svn to git source.
  The resulting module is less than half the size in comparison.

- Rework (and rename) previous "drop-Og-optimization" patch. The
  previous patch worked fine with -Os in CFLAGS (default). But if numeric
  values are used instead (e.g. -O2) this optimization would be completely
  removed. The new patch prevents that.

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>

net/chan-sccp-b/Makefile

@@ -9,15 +9,14 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=chan-sccp-b
-PKG_REV:=6728
+PKG_VERSION:=v4.3.0-20170814
-PKG_VERSION:=v4.2.3-r$(PKG_REV)
+PKG_RELEASE:=1
-PKG_RELEASE:=2
 
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
-PKG_SOURCE_URL:=http://svn.code.sf.net/p/chan-sccp-b/code/branches/v4.2
+PKG_SOURCE_URL:=git://github.com/chan-sccp/chan-sccp.git
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_SOURCE_VERSION:=$(PKG_REV)
+PKG_SOURCE_VERSION:=016fee3a96b09d5404757f7b178af2e349e55bcc
-PKG_SOURCE_PROTO:=svn
+PKG_SOURCE_PROTO:=git
 
 PKG_FIXUP:=autoreconf
 
@@ -64,10 +63,9 @@ Package/asterisk11-chan-sccp-b/description = $(Package/description/Default)
 Package/asterisk13-chan-sccp-b/description = $(Package/description/Default)
 
 CONFIGURE_ARGS += \
-	--enable-static \
+	--disable-debug \
-	--enable-section-relocation \
-	--enable-conference \
 	--enable-advanced-functions \
+	--enable-conference \
 	--enable-video
 
 ifeq ($(BUILD_VARIANT),asterisk13)

net/chan-sccp-b/patches/01-drop-Og-optimization.patch

@@ -1,11 +0,0 @@
---- a/autoconf/extra.m4
-+++ b/autoconf/extra.m4
-@@ -501,7 +501,7 @@ AC_DEFUN([CS_ENABLE_OPTIMIZATION], [
- 				])
- 			;;
- 		esac
--		CFLAGS_saved="${CFLAGS_saved} ${optimize_flag} "
-+		CFLAGS_saved="${CFLAGS_saved} "
- 	])
- 	
- 	AS_IF([test "X${enable_debug}" == "Xyes"], [

net/chan-sccp-b/patches/01-prevent-extra-optimization.patch

@@ -0,0 +1,20 @@
+--- a/autoconf/extra.m4
++++ b/autoconf/extra.m4
+@@ -472,17 +472,6 @@ AC_DEFUN([CS_ENABLE_OPTIMIZATION], [
+ 		])
+ 	 	CPPFLAGS_saved="${CPPFLAGS_saved} -D_FORTIFY_SOURCE=2"
+ 		GDB_FLAGS=""
+-	], [
+-	 	CFLAGS_saved="`echo ${CFLAGS_saved} |sed -e 's/\-O[0-9]\ \?//g' -e 's/[^|\ ]\-g[$|\ ]//g'`"
+-		optimize_flag="-O0"
+-		case "${CC}" in
+-			*gcc*)
+-				AX_CHECK_COMPILE_FLAG(-Og, [
+-					optimize_flag="-Og"
+-				])
+-			;;
+-		esac
+-		CFLAGS_saved="${CFLAGS_saved} ${optimize_flag} "
+ 	])
+ 
+ 	AS_IF([test "X${enable_debug}" == "Xyes"], [