Update to 4.1

• Take maintainership
• Change MASTER_SITES to the one used by other projects like HaikuPorts
• Set LICENSE_FILE
• Build the port manually via do-build; there is no point in patching the official makefile, it's is too fragile
• Remove all the patches, they are no longer needed
• Shorten pkg-descr & set WWW
• Install the manual page under share/man/man1