- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

When decoding SLEB128, make sure sign extension is performed for
64-bit integers.

MFC after: 3 days

remove duplicate semicolons where possible.

Approved by: cperciva
MFC after: 1 week

Teach libdwarf about the DW_FORM_flag_present dwarf attribute, so
programs using libdwarf (such as ctfconvert) don't error out on files
containing the attribute.

MFC after: 2 weeks

Add the ability to search for all the inlined instances of a given function.

Reviewed by: jb
Obtained from: Juniper Networks

Add a BSD licensed DWARF library for use by the DTrace clients.

The API for this library is deliberately different to the GPL'd
libdwarf to avoid licensing problems.