[PATCH V2] gprofng: a new GNU profiler

[Vladimir Mezentsev]

Hi people!

Changes from V1
===============

We addressed all of Joseph Myers's remarks about gprofng Makefiles and 
configure scripts:
   - Report an error when bison is absent, or a version of bison is too old.
   - Added preload_libdirs in ${prefix}/etc/gprofng.rc to configure the 
location of the
     gprofng libraries (this was hard-coded previously).

We also took note of Jim Wilson’s comment about the naming of files in 
src/machinemodels.
In particular, file m5.ermm and his suggestion to make it clear this is 
for a SPARC
processor. For example sparc-m5.ermm.

This is going to be part of a bigger overhaul of the naming convention 
for these files.
The most obvious choice is to include the product name, but we 
definitely appreciate any
suggestions this group may have.


Where to get gprofng
====================

Due to the size of the contribution, we thought it would be better to 
submit it in the form
of a git branch, instead of a regular emailed patch series.

Repository: https://www.github.com/oracle/binutils-gdb
Branch:     oracle/gprofng-v2



Build for x86_64/i686
=====================

For x86_64/i686, gprofng should be built twice to support profiling for 
both 32-bit and 64-bit applications:
    configure --enable-shared --libdir=PREFIX/lib64 && make install
    configure --enable-shared CC='gcc -m32' CXX='g++ -m32' 
--target=i686-pc-linux-gnu --disable-gprofng-tools && make install