build

add INI config file support via libinih #153 #280

Job	Run time
build (wolfssl, WOLFSSL, libwolfssl-dev)	23s
build (none, none)	21s
build (mbedtls, MBEDTLS, libmbedtls-dev)	22s
build (openssl, OPENSSL, libssl-dev)	20s
	1m 26s

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