Fix MSVC build on cygwin

In the MSVC section of the Makefile, BASIC_CFLAGS is set to a value which contains the string "-DWIN32-D_CONSOLE". This results in a (single) malformed -Define being passed to the compiler. At least on my cygwin installation, the msvc compiler seems to ignore this parameter, without issuing an error or warning, and results in the WIN32 and _CONSOLE macros being undefined. This breaks the build. In order to fix the build, we simply insert a space between the two -Define parameters, "-DWIN32" and "-D_CONSOLE", as originally intended. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>