libunwind: Build from latest git master

disabled-packages/libunwind/build.sh

@@ -3,6 +3,14 @@
 # causes problems due to elf types being redefined.
 TERMUX_PKG_HOMEPAGE=http://www.nongnu.org/libunwind/
 TERMUX_PKG_DESCRIPTION="Library to determine the call-chain of a program"
-TERMUX_PKG_VERSION=1.2
-TERMUX_PKG_SRCURL=http://download.savannah.gnu.org/releases/libunwind/libunwind-${TERMUX_PKG_VERSION}.tar.gz
-TERMUX_PKG_SHA256=1de38ffbdc88bd694d10081865871cd2bfbb02ad8ef9e1606aee18d65532b992
+TERMUX_PKG_VERSION=1.2.2017.03.04
+local _COMMIT=2b8ab794b3a636c05396fdbaebbba25d8aa4722a
+TERMUX_PKG_SRCURL=https://github.com/libunwind/libunwind/archive/${_COMMIT}.zip
+TERMUX_PKG_SHA256=fdbe8f0348a0db86663fdf7a363fcb281fef220f85bd751db8ed13aca00c062d
+TERMUX_PKG_FOLDERNAME=libunwind-$_COMMIT
+# TERMUX_PKG_SRCURL=http://download.savannah.gnu.org/releases/libunwind/libunwind-${TERMUX_PKG_VERSION}.tar.gz
+# TERMUX_PKG_SHA256=1de38ffbdc88bd694d10081865871cd2bfbb02ad8ef9e1606aee18d65532b992
+
+termux_step_post_extract_package() {
+	NOCONFIGURE=1 ./autogen.sh
+}