This version of OpenVPN has mbed TLS support. To enable follow the following
instructions:

To Build and Install,

	./configure --with-crypto-library=mbedtls
	make
	make install

This version depends on mbed TLS 2.0 (and requires at least 2.0.0).

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Due to limitations in the mbed TLS library, the following features are missing
in the mbed TLS version of OpenVPN:

 * PKCS#12 file support
 * --capath support - Loading certificate authorities from a directory
 * Windows CryptoAPI support
 * X.509 alternative username fields (must be "CN")

Plugin/Script features:

 * X.509 subject line has a different format than the OpenSSL subject line
 * X.509 certificate export does not work
 * X.509 certificate tracking
