nginx: Add support for NJS module

Add support for NJS module. Various patch are required to make this
module correctly compile with the required library mainly related on
detecting config flags.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

net/nginx/patches/nginx-mod-njs/101-feature_test_fix.patch

@@ -0,0 +1,61 @@
+--- a/nginx-mod-njs/auto/explicit_bzero
++++ b/nginx-mod-njs/auto/explicit_bzero
+@@ -7,7 +7,7 @@
+ 
+ njs_feature="explicit_bzero()"
+ njs_feature_name=NJS_HAVE_EXPLICIT_BZERO
+-njs_feature_run=yes
++njs_feature_run=no
+ njs_feature_incs=
+ njs_feature_libs=
+ njs_feature_test="#include <strings.h>
+--- a/nginx-mod-njs/auto/getrandom
++++ b/nginx-mod-njs/auto/getrandom
+@@ -7,7 +7,7 @@
+ 
+ njs_feature="getrandom()"
+ njs_feature_name=NJS_HAVE_GETRANDOM
+-njs_feature_run=yes
++njs_feature_run=no
+ njs_feature_incs=
+ njs_feature_libs=
+ njs_feature_test="#include <unistd.h>
+@@ -76,6 +76,7 @@ if [ $njs_found = no ]; then
+ 
+     njs_feature="getentropy()"
+     njs_feature_name=NJS_HAVE_GETENTROPY
++    njs_feature_run=no
+     njs_feature_test="#include <unistd.h>
+ 
+                       int main(void) {
+--- a/nginx-mod-njs/auto/memalign
++++ b/nginx-mod-njs/auto/memalign
+@@ -8,7 +8,7 @@
+ 
+ njs_feature="posix_memalign()"
+ njs_feature_name=NJS_HAVE_POSIX_MEMALIGN
+-njs_feature_run=yes
++njs_feature_run=no
+ njs_feature_incs=
+ njs_feature_libs=
+ njs_feature_test="#include <stdlib.h>
+@@ -31,7 +31,7 @@ if [ $njs_found = no ]; then
+ 
+     njs_feature="memalign()"
+     njs_feature_name=NJS_HAVE_MEMALIGN
+-    njs_feature_run=yes
++    njs_feature_run=no
+     njs_feature_incs=
+     njs_feature_libs=
+     njs_feature_test="#include <stdlib.h>
+--- a/nginx-mod-njs/auto/time
++++ b/nginx-mod-njs/auto/time
+@@ -5,7 +5,7 @@
+ 
+ njs_feature="clock_gettime(CLOCK_MONOTONIC)"
+ njs_feature_name=NJS_HAVE_CLOCK_MONOTONIC
+-njs_feature_run=yes
++njs_feature_run=no
+ njs_feature_incs=
+ njs_feature_libs=
+ njs_feature_test="#include <time.h>