Move 'http_parser' to src/lib

Http_parser in fact does not depend on anything, even on the core.
As a rule, such basic libraries are stored in src/lib.

The patch is not necessary for anything, but it is a right thing
to do, while some activity is happening there.

src/CMakeLists.txt

@@ -100,7 +100,6 @@ set (core_sources
      util.c
      random.c
      trigger.cc
-     http_parser.c
      coll.c
      coll_def.c
      mpstream.c
@@ -219,7 +218,7 @@ endif()
 
 set_source_files_compile_flags(${server_sources})
 add_library(server STATIC ${server_sources})
-target_link_libraries(server core bit uri uuid ${ICU_LIBRARIES})
+target_link_libraries(server core http_parser bit uri uuid ${ICU_LIBRARIES})
 
 # Rule of thumb: if exporting a symbol from a static library, list the
 # library here.

src/lib/CMakeLists.txt

@@ -6,6 +6,7 @@ add_subdirectory(salad)
 add_subdirectory(csv)
 add_subdirectory(json)
 add_subdirectory(uri)
+add_subdirectory(http_parser)
 if(ENABLE_BUNDLED_MSGPUCK)
     add_subdirectory(msgpuck EXCLUDE_FROM_ALL)
 endif()

src/lib/http_parser/CMakeLists.txt

+add_library(http_parser STATIC http_parser.c)

src/lua/httpc.c

@@ -34,7 +34,7 @@
  */
 #define DRIVER_LUA_UDATA_NAME	"httpc"
 
-#include <http_parser.h>
+#include "http_parser/http_parser.h"
 #include "src/httpc.h"
 #include "say.h"
 #include "lua/utils.h"