isatty: Make it return true in Cygwin consoles on native Windows. * lib/isatty.c: Include <string.h>. (GetProcAddress): New macro. (GetNamedPipeClientProcessIdFuncType): New type. (GetNamedPipeClientProcessIdFunc): New variable. (QueryFullProcessImageNameFuncType): New type. (QueryFullProcessImageNameFunc): New variable. (initialized): New variable. (initialize): New function. (IsCygwinConsoleHandle): New function. (isatty): Invoke it. * doc/posix-functions/isatty.texi: Mention the issue.

Description:
Library containing
getservent() function, setservent() function, endservent() function,
getservbyname() function, getservbyport() function,
getprotoent() function, setprotoent() function, endprotoent() function,
getprotobyname() function, getprotobynumber() function.

Files:
m4/servent.m4

Depends-on:
sys_socket

configure.ac:
gl_SERVENT

Makefile.am:

Include:
<netdb.h>

Link:
$(SERVENT_LIB)

License:
LGPLv2+

Maintainer:
Simon Josefsson