[lib/ChangeLog] * __fpending.h: Don't include <stdio_ext.h> unless HAVE_DECL___FPENDING. This avoids a bug with lsbcc, where it causes <stdio_ext.h> to cause a compile-time error. Problem reported by Nelson H. F. Beebe. * getpass.c: Likewise, except for HAVE_DECL___FSETLOCKING instead of HAVE_DECL___PENDING. [m4/ChangeLog] * fpending.m4 (gl_FUNC_FPENDING): Check for stdio_ext at most once. * getpass.m4 (gl_PREREQ_GETPASS): Check for __fsetlocking's declaration.