pkg_cmp_summary: fixes for -A and -O.
Now they output an empty line after each compared package
even if it appeares multiple times in pkg_summary1.
fix for typoe in NEWS
Update latest change date in man pages
pkg_src_summary: new option -t was added.
If it is applied, a value of variable TOOL_DEPENDS is added to BUILD_DEPENDS.
A few regression tests were also added.
Update regression tests for pkg_src_summary according to recent changes in pkgsrc
version->0.62.0
  pkg_src_summary:
     - Option -t was added. If applied a value of TOOL_DEPENDS
       is added to BUILD_DEPENDS. This option works just like -b
       does for BOOTSTRAP_DEPENDS.

  pkg_cmp_summary:
     - Fixes for -A and -O. Now they output an empty line after each
       compared package even if it appeares multiple times in
       pkg_summary1. So, the output is now consistent.

  Last change time was updated for manual pages