[4.1 patch] relocate profile data file

[Grigory Zagorodnev]

Nathan,
Thank you very much for your time and valuable notes. Here is the final 
(wish so) patch and I need someone with cvs write permissions to 
proceed. Would you commit this patch for me, please?

This update includes:
   - comments for create_file_directory and gcov_version
   - disallowed non-ablsolute GCOV_PREFIX
   - info pages updated with absolute path requirement
   - removed some extra checks

Plus one comment:
 >> +       char *tmp = getenv("GCOV_PREFIX_STRIP");
 >> +       if (tmp)
 >
 > doesn't this need to be 'tmp && *tmp'?
No. Don't think so. Atoi will return zero on empty string and this is 
what expected in case of empty GCOV_PREFIX_STRIP.

- Grigory

2005-05-11  Grigory Zagorodnev  <grigory.zagorodnev@intel.com>
             H.J. Lu  <hongjiu.lu@intel.com	

     * libgcov.c (create_file_directory): New function. Create
     directory for the given file name.
     (gcov_max_filename): New static var. Keeps size
     of the longest file name.
     (gcov_exit): Always try to create directory for output
     file. Relocate each filename basing on environment vars.
     (__gcov_init): remember the longest file name.

     * tsystem.h: include filenames.h to get IS_DIR_SEPARATOR

     * doc/gcov.texi (Cross-profiling): New node documenting
     cross-profiling management.

     * doc/invoke.texi (-fprofile-arcs): xref to cross-profiling.

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