libalternatives-1.2+3.b848aad-bp155.2.5

- switch to a manual service rather than a buildtime tar service
  which introduces a bootstrap cycle between python and tar_scm

- Update to version v1.2+3.b848aad:
  * tests: fix array overrun in unit tests

- Use noun phrase for the summary; fix grammar in description.

- Update to version v1.2:
  * Add config option=KeepArgv0 to keep original argument during
    exec() call

- Update to version v1.1:
  * docs: Add broken manpage
  * tests: unit tests configs
  * tests: fix memory leak during tests
  * list_binaries: initialize pointer that is later used in free
  * libalts_exec_default() sets errno on not found

- Version v1.0.0:
  * Prefix symbols with libalts_ to avoid symbol clashes
  * Add symbol visibility and versioning
  * Decamelize public symbols and rename

- Update to version v1.2+30.a5431e9: (bsc#1191692)
  * Change license to less restrictive Apache 2.0
  * doc: fixing a few typos
  * Adds option to display target executable only
  * Makefiles and cmake: rework for reproducible build
  * Improve Makefile
  * libalts_exec_default: fix memory leak on error condition
  * libalts_write_binary_configured_priority_to_file: fix memory leak
  * saveConfigData(): fix file descriptor leak in while loop error case
  * loadConfigData(): use goto exit label to prevent file descriptor leaks
  * libalts_load_available_binaries: use goto err: label to fix leaks
  * loadAlternativeForBinary: goto-assisted error handling to avoid leaks
  * checkGroupConsistencies(): explicitly ignore unused `flags`
  * lib: refactor error handling of findAltConfig()
  * utils: fix possible memory leaks on error conditions
  * docs: fix some typos and grammar
  * Update README.md
  * lib: generally open[at] with O_CLOEXEC
  * Fix logic in options parser
  * Add basic Makefile for buidling without cmake
  * Added description for options=KeepArgv0
  * cmake: Express the dependency on CUnit correctly for building tests
  * cmake: Build and install CMake and PkgConfig files
  * cmake: Fix setup of shared linker flags
  * config.h: Fix the version to match the current latest tag