src/meta-openembedded:icewm: upgrade 2.9.8 -> 2.9.9

Changelog:
===========
-Permit percentages to have comma's in icesh.
-Keep accurate track of window changes in workspace buttons for
  PagerShowPreview.  Only redraw affected workspace buttons, which reduces
  the total number of workspace button redraws, especially for larges
  number of workspace buttons.
-Add key bindings for single window tiling operations for issues
  bbidulock/icewm#335, ice-wm/icewm#74 and ice-wm/icewm#84.
-Complete -e option.
-WindowMaker dock apps are supported.
-Support more HTML entities in icehelp.
-Remove dependency on asciidoc and prefer markdown format for the manual.
-Prevent warnings.
-Also install markdown.
-Try srcdir.
-Cleanup test and prefer markdown manual.
-Cleanup key grabs.
-Drop obsolete wmOccupyAll().
-Accept either markdown or asciidoc to generate manual html with CMake.
-Add markdown and icesh.
-Automatically detect and prevent race conditions in icesh relating to
  moving and sizing windows for issue #335. Improve the accuracy of the
  "sizeto" command in icesh for issue #335. Add "extents" command to
  icesh. Add "workarea" command to icesh.
-Get rid of the frameContext.
-Prefer findClient in two cases: unmap notify and recv ping.
-Merge remote-tracking branch 'upstream/icewm-1-4-BRANCH' into
  icewm-1-4-BRANCH
-Merge branch 'icewm-1-4-BRANCH'

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>