Problem:    File type checking has too many #ifdef.
Solution:   Always define the S_IF macros. (Ken Takata, closes #3306)

Problem:    Expanding a file name "~" results in $HOME. (Aidan Shafran)
Solution:   Change "~" to "./~" before expanding. (closes #3072)

Problem:    Too many #ifdefs.
Solution:   Graduate the +autocmd feature. Takes away 450 #ifdefs and
            increases code size of tiny Vim by only 40 Kbyte.

Problem:    Clearing a pointer takes two lines.
Solution:   Add VIM_CLEAR() and replace vim_clear(). (Hirohito Higashi,
            closes #2629)

Problem:    Using pointer before it is set.
Solution:   Search in whole buffer instead of next token.

Problem:    If cscope fails a search Vim may hang.
Solution:   Bail out when a search error is encountered. (Safouane Baroudi,
            closes #2598)

Problem:    FEAT_WINDOWS adds a lot of #ifdefs while it is nearly always
            enabled and only adds 7% to the binary size of the tiny build.
Solution:   Graduate FEAT_WINDOWS.

Problem:    There are still a few macros that should be all-caps.
Solution:   Make a few more macros all-caps.

Problem:    Some macros are in lower case.
Solution:   Make a few more macros upper case.

Problem:    When running :make the output may be in the system encoding,
            different from 'encoding'.
Solution:   Add the 'makeencoding' option. (Ken Takata)