[PATCH v4 0/3] Introduce stap options --sysroot and --sysenv

[Wade Farnsworth <wade_farnsworth at mentor dot com>]

This patchset introduces --sysroot and --sysenv options for stap, which
improve functionality in environments where the compiling system differs
from the one running the probes.

See Patch 1/3's description for more details on what has been implemented.

v2 - Implemented several improvements per Josh Stone's comments.
v3 - Further improvements per Josh Stone.  Include documentation and test cases
     for the new options.
v4 - Add more detail to the man page for --sysroot to clarify which paths
     are affected.
   - Changed handling of paths where both sysroot and non-
     sysroot versions are needed so that it's clear which version we're tracking.
   - Store the sysenv variable as map<string, string> instead of
     <string, char*>.
    

Wade Farnsworth (3):
  PR12331: Introduce stap options --sysroot and --sysenv
  PR12331: Document --sysroot and --sysenv
  PR12331: Add testcase for --sysroot and --sysenv

 cmdline.cxx                                 |    2 +
 cmdline.h                                   |    2 +
 dwflpp.cxx                                  |    4 +-
 hash.cxx                                    |    3 +-
 main.cxx                                    |    9 ++++
 session.cxx                                 |   59 ++++++++++++++++++++++++
 session.h                                   |    3 +
 setupdwfl.cxx                               |   37 +++++++++++++--
 setupdwfl.h                                 |    1 +
 stap.1                                      |   13 +++++
 tapset-itrace.cxx                           |    7 ++-
 tapset-utrace.cxx                           |    7 ++-
 tapsets.cxx                                 |   66 ++++++++++++++++++---------
 tapsets.h                                   |    2 +
 testsuite/systemtap.base/sysroot_sysenv.exp |   15 ++++++
 testsuite/systemtap.base/sysroot_sysenv.stp |    3 +
 translate.cxx                               |    4 +-
 util.cxx                                    |   27 +++++++++---
 util.h                                      |    3 +
 19 files changed, 224 insertions(+), 43 deletions(-)
 create mode 100644 testsuite/systemtap.base/sysroot_sysenv.exp
 create mode 100644 testsuite/systemtap.base/sysroot_sysenv.stp