[Bug 274329] x11-toolkits/libwnck3: fix warnings, and build with lld 17

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=274329

            Bug ID: 274329
           Summary: x11-toolkits/libwnck3: fix warnings, and build with
                    lld 17
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: gnome@FreeBSD.org
          Reporter: dim@FreeBSD.org
          Assignee: gnome@FreeBSD.org
             Flags: maintainer-feedback?(gnome@FreeBSD.org)

Building x11-toolkits/libwnck3 with lld 17 results in the following link
errors:

  cc  -o libwnck/libwnck-3.so.0.3.0
libwnck/libwnck-3.so.0.3.0.p/meson-generated_.._wnck-enum-types.c.o
libwnck/libwnck-3.so.0.3.0.p/meson-generated_.._libwnck-resources.c.o
libwnck/libwnck-3.so.0.3.0.p/application.c.o
libwnck/libwnck-3.so.0.3.0.p/class-group.c.o
libwnck/libwnck-3.so.0.3.0.p/pager.c.o libwnck/libwnck-3.so.0.3.0.p/screen.c.o
libwnck/libwnck-3.so.0.3.0.p/selector.c.o
libwnck/libwnck-3.so.0.3.0.p/tasklist.c.o libwnck/libwnck-3.so.0.3.0.p/util.c.o
libwnck/libwnck-3.so.0.3.0.p/window-action-menu.c.o
libwnck/libwnck-3.so.0.3.0.p/window.c.o
libwnck/libwnck-3.so.0.3.0.p/wnck-image-menu-item.c.o
libwnck/libwnck-3.so.0.3.0.p/workspace.c.o
libwnck/libwnck-3.so.0.3.0.p/xutils.c.o
libwnck/libwnck-3.so.0.3.0.p/pager-accessible.c.o
libwnck/libwnck-3.so.0.3.0.p/pager-accessible-factory.c.o
libwnck/libwnck-3.so.0.3.0.p/workspace-accessible.c.o
libwnck/libwnck-3.so.0.3.0.p/workspace-accessible-factory.c.o -Wl,--as-needed
-Wl,--no-undefined -Wl,-O1 -shared -fPIC -Wl,--start-group
-Wl,-soname,libwnck-3.so.0 -fstack-protector-strong -O2 -pipe
-fstack-protector-strong -isystem /usr/local/include -fno-strict-aliasing
-isystem /usr/local/include -Wl,-rpath,/usr/local/lib
-Wl,-rpath-link,/usr/local/lib
-Wl,--version-script,/wrkdirs/share/dim/ports/x11-toolkits/libwnck3/work/libwnck-3.36.0/libwnck/libwnck-3.map
-lm /usr/local/lib/libcairo.so /usr/local/lib/libXext.so
/usr/local/lib/libXrender.so /usr/local/lib/libX11.so
/usr/local/lib/libglib-2.0.so /usr/local/lib/libintl.so
/usr/local/lib/libgobject-2.0.so /usr/local/lib/libgtk-3.so
/usr/local/lib/libgdk-3.so /usr/local/lib/libharfbuzz.so
/usr/local/lib/libpangocairo-1.0.so /usr/local/lib/libpango-1.0.so
/usr/local/lib/libatk-1.0.so /usr/local/lib/libcairo-gobject.so
/usr/local/lib/libgdk_pixbuf-2.0.so /usr/local/lib/libgio-2.0.so
/usr/local/lib/libstartup-notification-1.so /usr/local/lib/libXRes.so
-Wl,--end-group
  ld: error: version script assignment of 'global' to symbol '__progname'
failed: symbol not defined
  ld: error: version script assignment of 'global' to symbol 'environ' failed:
symbol not defined
  cc: error: linker command failed with exit code 1 (use -v to see invocation)

Commit bf6718d6938e added patch-libwnck_libwnck-3.map a long time ago,
but it is unclear why. Remove the patch so the undefined symbols are no
longer referenced in the linker script.

While here, fix two warnings about incorrectly defined header guards:

  In file included from ../libwnck/pager-accessible-factory.c:20:
  ../libwnck/pager-accessible-factory.h:19:9: warning:
'__WNCK_PAGER_ACCESSIBLE_FACTORY_H__' is used as a header guard here, followed
by #define of a different macro [-Wheader-guard]
     19 | #ifndef __WNCK_PAGER_ACCESSIBLE_FACTORY_H__
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ../libwnck/pager-accessible-factory.h:20:9: note:
'__WBCK_PAGER_ACCESSIBLE_FACTORY_H__' is defined here; did you mean
'__WNCK_PAGER_ACCESSIBLE_FACTORY_H__'?
     20 | #define __WBCK_PAGER_ACCESSIBLE_FACTORY_H__
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        |         __WNCK_PAGER_ACCESSIBLE_FACTORY_H__
  ../libwnck/workspace-accessible-factory.h:19:9: warning:
'__WNCK_WORKSPACE_ACCESSIBLE_FACTORY_H__' is used as a header guard here,
followed by #define of a different macro [-Wheader-guard]
     19 | #ifndef __WNCK_WORKSPACE_ACCESSIBLE_FACTORY_H__
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ../libwnck/workspace-accessible-factory.h:20:9: note:
'__WBCK_WORKSPACE_ACCESSIBLE_FACTORY_H__' is defined here; did you mean
'__WNCK_WORKSPACE_ACCESSIBLE_FACTORY_H__'?
     20 | #define __WBCK_WORKSPACE_ACCESSIBLE_FACTORY_H__
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        |         __WNCK_WORKSPACE_ACCESSIBLE_FACTORY_H__

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