Problem:    Cannot generate prototypes for Win32 files and VMS.
Solution:   Add typedefs and #ifdef

Problem:    Generating proto for if_ruby.c uses type not defined elsewhere.
Solution:   Do not generate a prototype for
            rb_gc_writebarrier_unprotect_promoted()

Problem:    "-fwrapv" argument breaks use of cproto.
Solution:   Remove the alphabetic arguments in a drastic way.

Problem:    Users are not aware their encryption is weak.
Solution:   Give a warning when prompting for the key.

Problem:    When generating ja.sjis.po the header is not correctly adjusted.
Solution:   Check for the right header string. (Ken Takata)

Problem:    Building with MingW and Perl.
Solution:   Remove quotes. (Ken Takata)

Problem:    MS-Windows: Cannot open a file with 259 characters.
Solution:   Fix off-by-one error. (Ken Takata)

Problem:    On MS-Windows when 'encoding' is a double-byte encoding a file
            name longer than MAX_PATH bytes but shorter than that in
            characters causes problems.
Solution:   Fail on file names longer than MAX_PATH bytes. (Ken Takata)

Problem:    Restriction of the MS-Windows installer that the path must end in
            "Vim" prevents installing more than one version.
Solution:   Remove the restriction. (Tim Lebedkov)

Problem:    Cannot append a list of lines to a file.
Solution:   Add the append option to writefile(). (Yasuhiro Matsumoto)