build: add backwards compatible option for runstatedir
build: add backwards compatible option for runstatedir

--runstatedir will only be available in Autoconf 2.70, which is not yet
released. Provide an equivalent --with-runstatedir replacement for older
versions.

Signed-off-by: Jonas Witschel <87a164e5d00d5dcdd001e37b34ea8bcd3fc3a172@gmx.de>

01org/TPM2.0-TSS,01org/TPM2.0-TSS,01org/tpm2-tss,01org/tpm2-tss,tpm2-software/tpm2-tss,tpm2-software/tpm2-tss,01org/TPM2.0-TSS,01org/TPM2.0-TSS,tpm2-software/tpm2-tss,01org/tpm2-tss