thrift: Add -cpp_use_include_prefix flag to compiler

Summary: Adds a new flag to allow for a mode where #include statements in generated c++ will include path context information.  For example, if my .thrift file includes "foo/bar/baz.thrift", the generated source files will contain #include statements like:

         #include "foo/bar/gen-cpp/baz_types.h"

         instead of just:

         #include "baz_types.h"

         -cpp_use_include_prefix is OFF by default.

Reviewed By: dreiss

Test Plan: Tested against multiple thrift input files both with and without the new flag.

Revert: OK

DiffCamp Revision: 5522


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665431 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/compiler/cpp/src/thrifty.yy b/compiler/cpp/src/thrifty.yy
index 5be19b3..2b09972 100644
--- a/compiler/cpp/src/thrifty.yy
+++ b/compiler/cpp/src/thrifty.yy
@@ -347,7 +347,7 @@
       if (g_parse_mode == INCLUDES) {
         std::string path = include_file(std::string($2));
         if (!path.empty()) {
-          g_program->add_include(path);
+          g_program->add_include(path, std::string($2));
         }
       }
     }