r1577, r1582 merge:

Cygwin support

auto/headers

@@ -6,3 +6,5 @@ ngx_include="unistd.h";    . auto/include
 ngx_include="inttypes.h";  . auto/include
 ngx_include="limits.h";    . auto/include
 ngx_include="sys/filio.h"; . auto/include
+ngx_include="crypt.h";     . auto/include
+ngx_include="malloc.h";    . auto/include

src/os/unix/ngx_posix_config.h

@@ -19,6 +19,12 @@
 #endif
 
 
+#ifdef __CYGWIN__
+#define timezonevar             /* timezone is variable */
+#define NGX_BROKEN_SCM_RIGHTS   1
+#endif
+
+
 #include <sys/types.h>
 #include <sys/time.h>
 #if (NGX_HAVE_UNISTD_H)
@@ -64,6 +70,15 @@
 #include <limits.h>             /* IOV_MAX */
 #endif
 
+#if (NGX_HAVE_MALLOC_H)
+#include <malloc.h>             /* memalign() */
+#endif
+
+#if (NGX_HAVE_CRYPT_H)
+#include <crypt.h>
+#endif
+
+
 #ifndef IOV_MAX
 #define IOV_MAX   16
 #endif

src/os/unix/ngx_process_cycle.c

@@ -409,6 +409,12 @@ ngx_signal_worker_processes(ngx_cycle_t *cycle, int signo)
     ngx_err_t      err;
     ngx_channel_t  ch;
 
+#if (NGX_BROKEN_SCM_RIGHTS)
+
+    ch.command = 0;
+
+#else
+
     switch (signo) {
 
     case ngx_signal_value(NGX_SHUTDOWN_SIGNAL):
@@ -427,6 +433,8 @@ ngx_signal_worker_processes(ngx_cycle_t *cycle, int signo)
         ch.command = 0;
     }
 
+#endif
+
     ch.fd = -1;