worksheet: add embedded image options #173

Job	Run time
Make (gcc)	2m 46s
Make (gcc, USE_STANDARD_TMPFILE=1)	1m 27s
Make (gcc, USE_SYSTEM_MINIZIP=1)	1m 33s
Make (gcc, USE_DTOA_LIBRARY=1)	2m 16s
Make (gcc, USE_NO_MD5=1)	1m 31s
Make (gcc, USE_OPENSSL_MD5=1)	1m 37s
Make (gcc, USE_MEM_FILE=1)	1m 48s
Make (clang)	3m 49s
Make (clang, USE_STANDARD_TMPFILE=1)	2m 54s
Make (clang, USE_SYSTEM_MINIZIP=1)	2m 59s
Make (clang, USE_DTOA_LIBRARY=1)	1m 35s
Make (clang, USE_NO_MD5=1)	1m 48s
Make (clang, USE_OPENSSL_MD5=1)	2m 58s
Make (clang, USE_MEM_FILE=1)	1m 41s
	30m 42s

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