RELEASE: Update
RELEASE: Update

Make the RELEASE.md file more thorough and organized to help
prevent release issues.

On tpm2-tools 4.0-rc1, the tag was uploaded but the commit was
not pushed to the release branch (master). This for RC2 we had
to merge RC1 into the master prior to the tag.

Signed-off-by: William Roberts <60148e894dabf0b83bde1d460768794cd453c455@intel.com>

01org/tpm2.0-tools,01org/tpm2.0-tools,01org/tpm2.0-tools