apparmor: copy xpdfimport definition into xpdfimport and allow "m"

Dec 11 18:46:11 sid kernel: [  176.085106] audit: type=1400 audit(1513014371.237:22): apparmor="DENIED" operation="file_mmap" profile="libreoffice-xpdfimport" name="/usr/lib/libreoffice/program/xpdfimport" pid=1511 comm="xpdfimport" requested_mask="m" denied_mask="m" fsuid=1000 ouid=0

Change-Id: I31ddb412d1dd95506a00d22739a33d2e6770ba23

sysui/desktop/apparmor/program.xpdfimport

@@ -22,6 +22,8 @@ profile libreoffice-xpdfimport INSTDIR-program/xpdfimport {
   /usr/share/libreoffice/share/config/* r,
   owner @{HOME}/.config/libreoffice{,dev}/?/user/uno_packages/cache/log.txt rw,
 
+  INSTDIR-program/xpdfimport        pxm,
+
   #Uncomment for build testing (should be one directory <- of instdir)
   #/mnt/store/git/libo/**    r,
 }