qemu-ga: add missing libpcre to MSI build

glib depends on libpcre which was not shipped with the MSI, thus
starting of the qemu-ga.exe failed with the respective error message.

Tell WIXL to ship this library with the MSI to avoid this problem.
Signed-off-by: NThomas Lamprecht <t.lamprecht@proxmox.com>
CC: Stefan Weil <sw@weilnetz.de>
CC: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: NMichael Roth <mdroth@linux.vnet.ibm.com>

qga/installer/qemu-ga.wxs

@@ -125,6 +125,9 @@
           <Component Id="libwinpthread" Guid="{6C117C78-0F47-4B07-8F34-6BEE11643829}">
             <File Id="libwinpthread_1.dll" Name="libwinpthread-1.dll" Source="$(var.Mingw_bin)/libwinpthread-1.dll" KeyPath="yes" DiskId="1"/>
           </Component>
+          <Component Id="libpcre" Guid="{7A86B45E-A009-489A-A849-CE3BACF03CD0}">
+            <File Id="libpcre_1.dll" Name="libpcre-1.dll" Source="$(var.Mingw_bin)/libpcre-1.dll" KeyPath="yes" DiskId="1"/>
+          </Component>
           <Component Id="registry_entries" Guid="{D075D109-51CA-11E3-9F8B-000C29858960}">
             <RegistryKey Root="HKLM"
                          Key="Software\$(env.QEMU_GA_MANUFACTURER)\$(env.QEMU_GA_DISTRO)\Tools\QemuGA">
@@ -173,6 +176,7 @@
       <ComponentRef Id="libssp" />
       <ComponentRef Id="libwinpthread" />
       <ComponentRef Id="registry_entries" />
+      <ComponentRef Id="libpcre" />
     </Feature>
 
     <InstallExecuteSequence>