build-package: add TERMUX_PKG_DEVPACKAGE_{BREAKS,REPLACES} support

scripts/build/termux_create_subpackages.sh

@@ -10,6 +10,12 @@ termux_create_subpackages() {
 		else
 			echo "TERMUX_SUBPKG_DEPENDS=\"$TERMUX_PKG_NAME\"" >> "$_DEVEL_SUBPACKAGE_FILE"
 		fi
+		if [ -n "$TERMUX_PKG_DEVPACKAGE_BREAKS" ]; then
+			echo "TERMUX_SUBPKG_BREAKS=\"$TERMUX_PKG_DEVPACKAGE_BREAKS\"" >> "$_DEVEL_SUBPACKAGE_FILE"
+		fi
+		if [ -n "$TERMUX_PKG_DEVPACKAGE_REPLACES" ]; then
+			echo "TERMUX_SUBPKG_REPLACES=\"$TERMUX_PKG_DEVPACKAGE_REPLACES\"" >> "$_DEVEL_SUBPACKAGE_FILE"
+		fi
 	fi
 	# Now build all sub packages
 	rm -Rf "$TERMUX_TOPDIR/$TERMUX_PKG_NAME/subpackages"

scripts/build/termux_step_setup_variables.sh

@@ -104,6 +104,8 @@ termux_step_setup_variables() {
 	TERMUX_PKG_CONFFILES=""
 	TERMUX_PKG_INCLUDE_IN_DEVPACKAGE=""
 	TERMUX_PKG_DEVPACKAGE_DEPENDS=""
+	TERMUX_PKG_DEVPACKAGE_BREAKS=""
+	TERMUX_PKG_DEVPACKAGE_REPLACES=""
 	# Set if a host build should be done in TERMUX_PKG_HOSTBUILD_DIR:
 	TERMUX_PKG_HOSTBUILD=""
 	TERMUX_PKG_FORCE_CMAKE=no # if the package has autotools as well as cmake, then set this to prefer cmake