bdwgc: use github repo for source location

The Yocto Autobuilder has been unable to fetch the release package
from the developer's website at www.hboehm.info, so change recipe
to fetch from the developer's github repo instead.

(From OE-Core rev: b2dc5a68e74dafedf7960ef77ad3d73912ed7960)

Signed-off-by: Bill Randle <william.c.randle@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/bdwgc/bdwgc_7.4.2.bb

@@ -21,18 +21,16 @@ SECTION = "devel"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://README.QUICK;md5=55f5088f90a982fed7af9a4897047ef7"
 
-SRC_URI = "http://www.hboehm.info/gc/gc_source/gc-${PV}.tar.gz \
+SRCREV = "e31cdc288ffbee5bf25f948e19deb5a7ce846971"
+SRC_URI = "git://github.com/ivmai/bdwgc.git;branch=release-7_4 \
            file://0001-fix-build-with-musl.patch \
            file://0001-configure.ac-add-check-for-NO_GETCONTEXT-definition.patch \
-	   file://0002-Altera-NIOS2-support.patch \
+           file://0002-Altera-NIOS2-support.patch \
           "
 
-SRC_URI[md5sum] = "12c05fd2811d989341d8c6d81f66af87"
-SRC_URI[sha256sum] = "63320ad7c45460e4a40e03f5aa4c6893783f21a16416c3282b994f933312afa2"
 FILES_${PN}-doc = "/usr/share"
 
-REAL_PV = "${@[d.getVar('PV',1)[:-1], d.getVar('PV',1)][(d.getVar('PV',1)[-1]).isdigit()]}"
-S = "${WORKDIR}/gc-${REAL_PV}"
+S = "${WORKDIR}/git"
 
 ARM_INSTRUCTION_SET = "arm"