Description of problem:
Attempting to build Fawkes in epel.  Fawkes uses the EST speech features.  The headers in all of the subdirectories of /usr/include/speech_tools contain a folder named EST containing more header files.  However, the headers in /usr/include/speech_tools expect headers to be directly in each subdirectory.

For example, the error:
/usr/include/speech_tools/EST_THash.h:48:36: error: instantiate/EST_THashI.h: No such file or directory

EST_THash.h expects EST_THashI.h to be in ./instantiate/ but it's really in ./instantiate/EST/instantiate/

Another example, the error:
/usr/include/speech_tools/EST_track_aux.h:132: error: 'EST_Relation' has not been declared

EST_track_aux.h includes "ling_class/EST_Relation.h"  However, EST_Relation.h is really located at ling_class/EST/EST_Relation.h

I think the all the extraneous subdirectories should be removed so that the headers are internally consistent and usable.

Faild build logs:
https://koji.fedoraproject.org/koji/taskinfo?taskID=4597083

Version-Release number of selected component (if applicable):
festival-speechtools-devel-1.2.96-18.el6

How reproducible:
Try building anything including festival/festival.h

Steps to Reproduce:
1. Install festival-devel
2. Create a file with the following:
#include <festival/festival.h>
int main (int argc, char *argv[])
{
  return 0;
}


3. Build with the following:
g++ -o ftest ftest.cc -I/usr/include/festival
  
Actual results:
Build failure, missing several headers

Expected results:
no errors.

Additional info: