OpenAFS Master Repository branch, master, updated. openafs-devel-1_5_74-15-g54226e9

[Gerrit Code Review]

The following commit has been merged in the master branch:
commit 54226e9ad45003f4f54b1a7ba2b13003dcf1edb7
Author: Russ Allbery <rra@stanford.edu>
Date:   Mon Apr 19 22:01:27 2010 -0700

    Fix UCONTEXT detection on ppc_linux26 via include order
    
    param.linux26.h defines USE_UCONTEXT for all Linux platforms for
    glibc 2.4 and higher, but it does this by testing __GLIBC__ and
    __GLIBC_MINOR__.  These are defined by features.h, which is included
    by any system header.  At least one system header must be included
    before those are defined.  lwp/process.c was including <afsconfig.h>
    and <afs/param.h> before any other headers, leading to those macros
    being undefined.  Most of the Linux architectures either have their
    own implementation or were explicitly defining USE_UCONTEXT in the
    per-architecture param file, but ppc_linux26 was relying on the
    default.
    
    Fix this by reordering the includes to include the various system
    headers before <afs/param.h> and add a comment explaining why.
    
    This previously worked in earlier versions because the old
    param.ppc_linux26.h file included <afs/afs_sysnames.h>, which
    included "stds.h", which included a system header prior to the check
    for ucontext.  The new generic param file reverses that order.
    
    Change-Id: I214e54f684afdef07e6e2dec5b6e6e4d255ab4ec
    Reviewed-on: http://gerrit.openafs.org/1791
    Reviewed-by: Derrick Brashear <shadow@dementia.org>
    Tested-by: Derrick Brashear <shadow@dementia.org>

 src/lwp/process.c |   14 ++++++++++----
 1 files changed, 10 insertions(+), 4 deletions(-)

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