bug#15110: build error: WCONTINUED undeclared

[Dan Nicolaescu]

On an old redhat machine using glibc-2.2.5-44, emacs from bzr does not build 
anymore:


In file included from /emacs/src/process.c:34:
/emacs/src/lisp.h:2727: warning: `debug_on_exit' is narrower than values of its 
type
/emacs/src/process.c: In function `Faccept_process_output':
/emacs/src/process.c:3945: warning: comparison is always true due to limited 
range of data type
/emacs/src/process.c: In function `handle_child_signal':
/emacs/src/process.c:6180: `WCONTINUED' undeclared (first use in this function)
/emacs/src/process.c:6180: (Each undeclared identifier is reported only once
/emacs/src/process.c:6180: for each function it appears in.)