Implement Fast CGI support

Split the monolithic functions preparing special variables such
as $_REQUEST or $_SERVER into multiple functions to enable feeding of
data from multiple sources. In case of FastCGI protocol, the values are
sent by the web server.

Import parts of proxygen and thrift.

Added #ifdef's to allow compilation with an unpatched version
of libevent library.

Reviewed By: @ptarjan

Differential Revision: D988737
Differential Revision: D1008756
Differential Revision: D1021808
Differential Revision: D1035231

stubs/glog/portability.h

@@ -0,0 +1,9 @@
+#ifndef HPHP_THIRD_PARTY_GLOG_PORTABILITY
+#define HPHP_THIRD_PARTY_GLOG_PORTABILITY
+
+#include <glog/logging.h>
+
+#define CHECK_NULL(val) CHECK_EQ((val), static_cast<void*>(NULL))
+
+#endif // #ifndef HPHP_THIRD_PARTY_GLOG_PORTABILITY
+

thrift/.gitignore

@@ -0,0 +1 @@
+Makefile

thrift/CMakeLists.txt

@@ -0,0 +1,15 @@
+set(CXX_SOURCES)
+auto_sources(files "*.cpp" "RECURSE" "${CMAKE_CURRENT_SOURCE_DIR}")
+list(APPEND CXX_SOURCES ${files})
+
+find_package(Boost 1.48.0 COMPONENTS thread system REQUIRED)
+include_directories(${Boost_INCLUDE_DIRS})
+link_directories(${Boost_LIBRARY_DIRS})
+
+include_directories("${HPHP_HOME}/hphp/third_party")
+add_library(hphp_thrift STATIC ${CXX_SOURCES})
+
+target_link_libraries(hphp_thrift ${Boost_LIBRARIES}
+                                  ${LIBGLOG_LIBRARY}
+                                  ${LIBPTHREAD_LIBRARIES})
+