appveyor: Drop installing unnecessary packages

Drop installing packages which were used by the autotools build (or
maybe even monolithic build!) but are no longer required by the meson
build

Also, alphabetically sort within tools, protocol headers, devel
libraries, miscellaneous groups to match [1]

[1] https://x.cygwin.com/docs/cg/prog-build-prerequisites.html

Also, update to require xkbcomp-devel, split from xkbcomp

.appveyor.yml

@@ -16,29 +16,24 @@ install:
 - curl -fsSL https://gist.githubusercontent.com/jon-turney/0338af595313f598bfab15a0ac0df847/raw/bd0eeca6be899e7846aa988fbcf15e4e12f5f842/zp_libtool_cleanlafiles.sh -o %CYGWIN_ROOT%\etc\postinstall\zp_libtool_cleanlafiles.sh
 - echo Updating Cygwin and installing build prerequisites
 - "%CYGWIN_ROOT%\\%SETUP% -qnNdO -R %CYGWIN_ROOT% -s %CYGWIN_MIRROR% -l %CACHE% -g -P \
-meson,\
 binutils,\
 bison,\
-bzip2,\
-diffutils,\
-fileutils,\
-findutils,\
 flex,\
-gawk,\
 gcc-core,\
-make,\
-patch,\
+meson,\
+ninja,\
 pkg-config,\
 python3,\
-sed,\
-tar,\
-xorgproto,\
 windowsdriproto,\
+xorgproto,\
 libdmx-devel,\
+libepoxy-devel,\
 libfontenc-devel,\
 libfreetype-devel,\
 libGL-devel,\
+libnettle-devel,\
 libpixman1-devel,\
+libtirpc-devel,\
 libX11-devel,\
 libXRes-devel,\
 libXau-devel,\
@@ -63,17 +58,12 @@ libxcb-shape-devel,\
 libxcb-util-devel,\
 libxcb-xkb-devel,\
 libxkbfile-devel,\
-zlib,\
 font-util,\
 khronos-opengl-registry,\
 python3-lxml,\
-xorg-util-macros,\
-xtrans,\
-xkbcomp,\
+xkbcomp-devel,\
 xkeyboard-config,\
-libnettle-devel,\
-libepoxy-devel,\
-libtirpc-devel"
+xtrans"
 - echo Install done
 cache:
 - C:\cache