Dependency update: update mod_pagespeed to the head of master

Update mod_pagespeed to 3a975382362a169a38b5d1a75b239f30ede2d112

.gitmodules

@@ -0,0 +1,18 @@
+[submodule "testing-dependencies/mod_pagespeed"]
+	path = testing-dependencies/mod_pagespeed
+	url = https://github.com/pagespeed/mod_pagespeed.git
+[submodule "testing-dependencies/ngx_cache_purge"]
+	path = testing-dependencies/ngx_cache_purge
+	url = https://github.com/FRiCKLE/ngx_cache_purge.git
+[submodule "testing-dependencies/nginx"]
+	path = testing-dependencies/nginx
+	url = https://github.com/nginx/nginx.git
+[submodule "testing-dependencies/set-misc-nginx-module"]
+	path = testing-dependencies/set-misc-nginx-module
+	url = https://github.com/openresty/set-misc-nginx-module
+[submodule "testing-dependencies/ngx_devel_kit"]
+	path = testing-dependencies/ngx_devel_kit
+	url = https://github.com/simpl/ngx_devel_kit
+[submodule "testing-dependencies/headers-more-nginx-module"]
+	path = testing-dependencies/headers-more-nginx-module
+	url = https://github.com/openresty/headers-more-nginx-module

PSOL_BINARY_URL

@@ -1 +1,4 @@
-https://dl.google.com/dl/page-speed/psol/1.13.35.2-$BIT_SIZE_NAME.tar.gz
+In a release this file would contain the URL to download the pre-compiled PSOL
+binary, but on development branches (like this one) you have to build PSOL from
+source yourself.  See:
+  https://github.com/pagespeed/ngx_pagespeed/wiki/Building-PSOL-From-Source

scripts/build_ngx_pagespeed.sh

@@ -486,7 +486,7 @@ add support for dynamic modules in a way compatible with ngx_pagespeed until
       status "Detected debian-based distro."
 
       install_dependencies "apt-get install" debian_is_installed \
-        build-essential zlib1g-dev libpcre3 libpcre3-dev unzip uuid-dev
+        "build-essential zlib1g-dev libpcre3 libpcre3-dev unzip"
 
       if gcc_too_old; then
         if [ ! -e /usr/lib/gcc-mozilla/bin/gcc ]; then
@@ -504,7 +504,7 @@ add support for dynamic modules in a way compatible with ngx_pagespeed until
       status "Detected redhat-based distro."
 
       install_dependencies "yum install" redhat_is_installed \
-        gcc-c++ pcre-devel zlib-devel make unzip wget libuuid-devel
+        "gcc-c++ pcre-devel zlib-devel make unzip wget"
       if gcc_too_old; then
         if [ ! -e /opt/rh/devtoolset-2/root/usr/bin/gcc ]; then
           redhat_major_version=$(

src/ngx_event_connection.cc

@@ -57,9 +57,7 @@ bool NgxEventConnection::Init(ngx_cycle_t* cycle) {
     // See https://github.com/pagespeed/ngx_pagespeed/issues/1380
     // TODO(oschaaf): Consider implementing a queueing mechanism for retrying
     // failed writes.
-#ifdef F_SETPIPE_SZ
     fcntl(pipe_write_fd_, F_SETPIPE_SZ, 200*1024 /* minimal amount of bytes */);
-#endif
     return true;
   }
   close(file_descriptors[0]);