[PATCH v6] Fix dynamic linker issue with bind-now

["Petar Jovanovic" <petar dot jovanovic at rt-rk dot com>]

Fix the bind-now case when DT_REL and DT_JMPREL sections are separate and
there is a gap between them. This patch fixes bug #14341.
---
v6:
- Addressed comments by H.J. Lu
- modified the test to fail with the latest binutils
- style changes addressed

v5:
- Added a ChangeLog entry and bug number into commit message.

v4:
- Moved the Makefile part into sysdeps/x86_64/Makefile, so the test is
  executed for x86-64 only

v3:
- addressed comments raised by Mike Frysinger
  - use of test-skeleton.c
  - use -Wl,-z,now instead of LD_BIND_NOW=1
  - moved comments to the start of the test file

v2:
- addressed all comments raised by Andreas Schwab

ChangeLog entry:

2015-07-15  Petar Jovanovic  <petar.jovanovic@rt-rk.com>

       [BZ #14341]
       * elf/dynamic-link.h (elf_machine_lazy_rel): Properly handle the
       case when there is a gap between DT_REL and DT_JMPREL sections.
       * elf/tst-split-dynreloc.c: New file.
       * elf/tst-split-dynreloc.lds: New file.
       * sysdeps/x86_64/Makefile: Add new test.

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