patch for frames support for sqwebmail 3.3.7/3.3.6

Antonio Polo, antonio.polo@arrakis.es
Ana Durantez, adj@demadrid.com
Pedro Ruiz, pruizmaldonado@yahoo.es

Instalation instructions:

copy *.c to your sqwebmailsrc/sqwebmail and retype make
untar the tar file to en-us directory: /usr/local/sqwebmail/html/en-us
run sqwebmail again 
