New environment variable TLS_INTERPOSER_DH_PEM_FILE to load a custom DH parameters PEM file.
A 2048 bit long DH parameters file can be generated with:
	openssl dhparam -out dh2048.pem 2048

Based on code by Erwann Abalea: https://issues.apache.org/bugzilla/show_bug.cgi?id=49559
Standarized DH parameters based on the length of the certificate's RSA/DSA key.
Based on Apache's bug #49559 https://issues.apache.org/bugzilla/show_bug.cgi?id=49559#c19
Merge branch 'waytogo'
Remove old code.
Remove obsolete doc.
Merge pull request #3 from aeburriel/master

Standarized DH parameters based on the length of the certificate's RSA/DSA key.