Fix compilation error in src/mswindows.c
Fix C89 warning in src/openssl.c
Define MIN and MAx macros in a single location

MIN and MAx are macros that a developer will universally expect
throughout the source. Yet, they were being defined in multiple places
across the source. Instead, define them in a single location in the
common wget.h header file and use them consistently everywhere.
Remove illogical assertion in ftp.c

A call to assert(1) will always fail and cause Wget to crash. If such a
situation does arise, Wget should invoke abort() and provide a useful
error message to the user prior to exiting.
Fix indentation in ftp.c (getftp)
Replace compatibility functions by gnulib functions
Fix message in configure.ac for when GnuTLS has not been found
cfg.mk (local-checks-to-skip): Add sc_cast_of_argument_to_free
Tag new release 1.16.1