c99: remove vim_round #909

C89 did not have round(), vim emulated it with vim_round. But since we're
using C99 this is not a problem anymore.
vim-patch:7.4.291 #879

Problem:    Compiler warning for int to pointer of different size when DEBUG
            is defined.
Solution:   use smsg() instead of EMSG3().

https://code.google.com/p/vim/source/detail?r=b5972833add9de714f4651e26fd9ea63ec4a880c
vim-patch:7.4.295 #833

Problem:    Various typos, bad white space and unclear comments.
Solution:   Fix typos.  Improve white space. Update comments.

https://code.google.com/p/vim/source/detail?r=662ae48e7e246a63d38c9f3165b15b62252edaee
vim-patch:7.4.306 #842

Problem:    getchar(0) does not return Esc.
Solution:   Do not wait for an Esc sequence to be complete.  (Yasuhiro
            Matsumoto)

https://code.google.com/p/vim/source/detail?r=05e1d8afcc5e375bf708ccc9810e2fd1a5a8a3cf
vim-patch:7.4.308 #832

Problem:    When using ":diffsplit" on an empty file the cursor is displayed
            on the command line.
Solution:   Limit the value of w_topfill.

https://code.google.com/p/vim/source/detail?r=e3d2b8d83bb30c428a051f50791e454fcbc080af
Enable and fix misc2.c -Wconversion warnings #907
Update Swedish (sv) translation: Sync to 11653ce2d7789ad1ccf31b37c12589cf1cb7787f
Update Swedish (sv) translation: improve translations.
Merge #913 'Update Swedish (sv) translation'
Include stdbool.h in some files which use it

Done by manual inspection of the output of this script:
grep -r -l -w "bool\|true\|false" * | grep 'c$\|h$' > has_bool
grep -r -l "stdbool.h" * | grep 'c$\|h$' > has_include
grep -F -x -v -f has_include has_bool
Remove stdbool.h from files which don't need it

Done by manual inspection of the output of this script:
grep -r -l -w "bool\|true\|false" * | grep 'c$\|h$' > has_bool
grep -r -l "stdbool.h" * | grep 'c$\|h$' > has_include
grep -F -x -v -f has_bool has_include
Include stdbool.h in headers which have functions with bool in signature

Done by manual inspecting of the output of this script:
grep -r -l -w "bool" * | grep 'c$' | sed 's/.c$//' > has_bool
grep -r -l -w "stdbool.h" * | grep 'h$' | sed 's/.h$//' > has_include
grep -F -x -v -f has_include has_bool
Merge #927 'Fix stdbool.h usage'