empty lines removed to fix the list items numbers
Add gettext (PO, MO, POT) files to known formats
fix compile error with MinGW-w64

Use _MAX_PATH instead of MAX_PATH.
Note that _MAX_MATH is defined in stdlib.h and MAX_PATH is defined in
windef.h which is included from windows.h.
use $(CC) instead of gcc

MinGW has various gcc aliases:
mingw32-gcc, i686-pc-mingw32-gcc, i686-w64-mingw32-gcc,
x86_64-w64-mingw32-gcc, etc.
This change enables to use them.
Merge pull request #412 from k-takata/topic/mingw64-compile-error

fix compile error with MinGW-w64
Merge pull request #410 from masklinn/patch-1

Add gettext (PO, MO, POT) files to known formats
Merge pull request #411 from k-takata/topic/use-CC-instead-of-gcc

use $(CC) instead of gcc
Merge pull request #371 from padawin/readme-fix

empty lines removed to fix the list items numbers
Merge master, fix conflict.