Update to 1.2.0

  New tool lmdbg-head(1) was implemented, see the man page for
  details.

  README: recomendations for procfs

  lmdbg-sym:
    - Much simplier (and correct) method for address convertion was
      implemented. As a result lmdbg-sym works correctly on AltLinux
      where ASLR and PIE are enabled by default.
    - Breakpoint are removed very soon after creation.
      This saves a lot of memory consumed by gdb(1)
      and dramatically speeds up it.

  lmdbg-run:
    - Arguments are passed correctly to progname
    - On glibc-based systems (e.g. Linux) malloc hooks are not used
      anymore as they are declared deprecated
    - Addresses from lmdbg.c are not included to stacktrace
    - Additional checks for address (returned by stacktrace(3))
      correctness.  As a result gdb(1) doesn't crash and therefore
      lmdbg-sym(1) work correctly.
    - stacktrace(3) doesn't not crash anymore on NetBSD/x64_64 with
      system utilities.  See implementation details in stacktrace.c.
    - New option -N
    - Option -v works correctly with non-zero exit status of progname.
    - Exits with error if progname is not specified.

  lmdbg-stat:
    - Fix for NULL dereference appeared if free(3) or realloc(3)
      stacktrace is seen without appropriate malloc(3) stacktrace.

  AWK interpreter is found at configure time via MKC_REQUIRE_PROGS.

  Build and regression tests were fixed for non-empty MAKEOBJDIR case.

  ChangeLog file is never installed.

  lmdbg-s2m and lmsbg-m2s was moved to libexec dir.

  mk-configure >= 0.24.0 is required for build.

  Fixes, improvements and additions in regression tests.