Start to support Windows (mingw-w64)
Fix bug index was moved before getting buffer in Stream_IO
Deal with new importing name of _exit in the latest translated header
Add new implementation package System.Formatting.Address_Image
Change casing parameter of Ada.Formatting to be consistent with Ada.Text_IO
Fix handling return value of posix_spawn
Improve exceptions raised with message by supplying source location
Remark some names that gdb knows
Use Raise_Exception_From_Here
Separate implementation parts for POSIX platform from Ada.Command_Line and Ada.Environment_Variables
Improve makefile by stopping ar rearchiving libgnat.a if unnecessary
Implement units in environment directory for Windows