Bump dependency on liburcu to version 0.8.4
Document changes for 2.4.0-3 release
Use dh-autoreconf to call autoreconf before building

The upstream supplied config.guess is outdated and could result in build
failures on ARM64. This fixes lintian error
outdated-autotools-helper-file.
Document changes for 2.4.0-4 release
Imported Upstream version 2.4.1
Merge tag 'upstream/2.4.1'

Upstream version 2.4.1
Document changes for 2.4.1-1 release
New upstream version 2.5.0
Merge tag 'upstream/2.5.0'

Upstream version 2.5.0
Update changelog for 2.5.0-1 release
Add symbols files for library packages

Closes: #765842
Thanks: Dmitry Smirnov
Bump standards version, no changes necessary
Update changelog for 2.5.0-2 release
New upstream version 2.5.1
Merge tag 'upstream/2.5.1'

Upstream version 2.5.1
Update changelog for 2.5.1-1 release
Tag arch-specfic symbols for i386 and amd64

The lttng_perf_counter symbols are only available on i386 and amd64.
Without properly tagging these symbols, builds on other architectures will
fail.

Closes: #767632
Update changelog for 2.5.1-2 release