[OE-core] [PATCHv4] Add alternatives for lastb

[Bryan Evenson]

I received help from Matthieu Crapet to find and fix a few problems with v3.

Changes in v4:
  * Adds last to PACKAGECONFIG_class-native and PACKAGECONFIG_class-nativesdk
    to mimic current behavior
  * Add "--disable-last" to configuration options if last is not in PACKAGECONFIG
  * Fix errors in the documentation alternative link generation

Changes in v3:
  * Uses PACKAGECONFIG to optionally build last
  * Only provides binary and man page alternatives if last is built

Changes in v2:
  * Rebase on master so patch applies cleanly

Bryan Evenson (1):
  util-linux: Add lastb to alternatives

 meta/recipes-core/util-linux/util-linux.inc | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

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2.1.0