libjemalloc: Add as disabled package

disabled-packages/libjemalloc/build.sh

@@ -0,0 +1,7 @@
+TERMUX_PKG_HOMEPAGE=http://www.canonware.com/jemalloc/
+TERMUX_PKG_DESCRIPTION="General-purpose scalable concurrent malloc(3) implementation"
+TERMUX_PKG_VERSION=4.0.0
+TERMUX_PKG_SRCURL=https://github.com/jemalloc/jemalloc/releases/download/${TERMUX_PKG_VERSION}/jemalloc-${TERMUX_PKG_VERSION}.tar.bz2
+TERMUX_PKG_BUILD_IN_SRC="yes"
+
+CPPFLAGS+=" -D__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4=1"