SmartOS/live 5901b81. Makefile README.md, overlay/generic manifest

Merge remote-tracking branch 'origin/release-20190411' into rfd163
DeltaFile
+416-0tools/build_boot_image
+406-0tools/format_image/format_image.c
+0-392tools/build_iso
+1-267overlay/generic/lib/svc/method/smartdc-init
+0-263tools/images/make_image
+208-0overlay/generic/lib/sdc/usb-key.sh
+116-0overlay/generic/boot/forth/menu.rc
+8-72overlay/generic/lib/svc/method/fs-joyent
+0-52tools/usb_fdisk_table
+40-0tools/format_image/Makefile
+16-20Makefile
+4-27src/nictagadm
+17-4overlay/generic/lib/sdc/config.sh
+13-6tools/build_vmware
+7-8README.md
+9-0tools/build_live
+7-1overlay/generic/smartdc/lib/smartos_prompt_config.sh
+0-6tools/images/2gb.fdisk
+0-6tools/images/8gb.fdisk
+0-6tools/images/1gb.fdisk
+0-6tools/images/4gb.fdisk
+3-2src/fw/test/lib/vm.js
+3-0overlay/generic/manifest
+2-1src/vm/tests/test-blocksizes.js
+2-0.gitignore
+1-1configure
+1-0overlay/generic/etc/driver_aliases
+0-1tools/build_usb
+1,280-1,14128 files

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