[Galaxy Tab 2 7" Android Development] Tsjoklat:
I noticed that the gapps package in the OP contains odex files and the official gapps package (gapps-kk-20131208) does not have any odex files.

Here is a comparison between the gapps in the OP (gapps-kk-20131115) and the latest official gapps for kitkat (gapps-kk-20131208). Looks like a lot of differences.

diff -rq gapps-kk-20131115 gapps-kk-20131208
Only in gapps-kk-20131208: install-optional.sh
Files gapps-kk-20131115/META-INF/com/google/android/update-binary and gapps-kk-20131208/META-INF/com/google/android/update-binary differ
Files gapps-kk-20131115/META-INF/com/google/android/updater-script and gapps-kk-20131208/META-INF/com/google/android/updater-script differ
Only in gapps-kk-20131208: optional
Files gapps-kk-20131115/system/addon.d/70-gapps.sh and gapps-kk-20131208/system/addon.d/70-gapps.sh differ
Only in gapps-kk-20131115/system/app: ChromeBookmarksSyncAdapter.apk
Only in gapps-kk-20131115/system/app: FaceLock.apk
Only in gapps-kk-20131115/system/app: FaceLock.odex
Only in gapps-kk-20131115/system/app: GalleryGoogle.apk
Only in gapps-kk-20131115/system/app: GalleryGoogle.odex
Files gapps-kk-20131115/system/app/GenieWidget.apk and gapps-kk-20131208/system/app/GenieWidget.apk differ
Only in gapps-kk-20131115/system/app: GenieWidget.odex
Only in gapps-kk-20131208/system/app: Gmail2.apk
Only in gapps-kk-20131115/system/app: GoogleCalendar.apk
Only in gapps-kk-20131208/system/app: GoogleCalendarSyncAdapter.apk
Only in gapps-kk-20131115/system/app: GoogleCamera.apk
Only in gapps-kk-20131115/system/app: GoogleCamera.odex
Only in gapps-kk-20131115/system/app: GoogleCloudPrint.apk
Files gapps-kk-20131115/system/app/GoogleContactsSyncAdapter.apk and gapps-kk-20131208/system/app/GoogleContactsSyncAdapter.apk differ
Only in gapps-kk-20131115/system/app: GoogleContactsSyncAdapter.odex
Only in gapps-kk-20131208/system/app: GoogleEars.apk
Only in gapps-kk-20131115/system/app: GoogleHangouts.apk
Files gapps-kk-20131115/system/app/GoogleHome.apk and gapps-kk-20131208/system/app/GoogleHome.apk differ
Only in gapps-kk-20131115/system/app: GoogleLatinIme.apk
Only in gapps-kk-20131208/system/app: GoogleTTS.apk
Only in gapps-kk-20131208/system/app: Hangouts.apk
Only in gapps-kk-20131115/system/app: iWnnIME.apk
Only in gapps-kk-20131115/system/app: iWnnIME_Kbd_White.apk
Files gapps-kk-20131115/system/app/MediaUploader.apk and gapps-kk-20131208/system/app/MediaUploader.apk differ
Only in gapps-kk-20131115/system/app: MediaUploader.odex
Only in gapps-kk-20131208/system/etc: g.prop
Only in gapps-kk-20131115/system/etc/permissions: com.google.android.camera2.xml
Only in gapps-kk-20131208/system/etc: preferred-apps
Only in gapps-kk-20131115/system/framework: com.google.android.camera2.jar
Only in gapps-kk-20131115/system/framework: com.google.android.camera2.odex
Files gapps-kk-20131115/system/framework/com.google.android.maps.jar and gapps-kk-20131208/system/framework/com.google.android.maps.jar differ
Only in gapps-kk-20131115/system/framework: com.google.android.maps.odex
Files gapps-kk-20131115/system/framework/com.google.android.media.effects.jar and gapps-kk-20131208/system/framework/com.google.android.media.effects.jar differ
Only in gapps-kk-20131115/system/framework: com.google.android.media.effects.odex
Files gapps-kk-20131115/system/framework/com.google.widevine.software.drm.jar and gapps-kk-20131208/system/framework/com.google.widevine.software.drm.jar differ
Only in gapps-kk-20131115/system/framework: com.google.widevine.software.drm.odex
Only in gapps-kk-20131115/system/lib: libfacelock_jni.so
Files gapps-kk-20131115/system/lib/libfilterpack_facedetect.so and gapps-kk-20131208/system/lib/libfilterpack_facedetect.so differ
Only in gapps-kk-20131208/system/lib: libfrsdk.so
Only in gapps-kk-20131115/system/lib: libgcam.so
Only in gapps-kk-20131115/system/lib: libgcam_swig_jni.so
Only in gapps-kk-20131208/system/lib: libgtalk_jni.so
Only in gapps-kk-20131208/system/lib: libgtalk_stabilize.so
Only in gapps-kk-20131115/system/lib: libiwnn.so
Only in gapps-kk-20131115/system/lib: libjni_eglfence.so
Only in gapps-kk-20131115/system/lib: libjni_filtershow_filters.so
Files gapps-kk-20131115/system/lib/libjni_latinimegoogle.so and gapps-kk-20131208/system/lib/libjni_latinimegoogle.so differ
Only in gapps-kk-20131208/system/lib: libjni_latinime.so
Only in gapps-kk-20131115/system/lib: libjni_mosaic.so
Only in gapps-kk-20131208/system/lib: libjni_t13n_shared_engine.so
Only in gapps-kk-20131115/system/lib: liblightcycle.so
Only in gapps-kk-20131115/system/lib: libnativehelper_compat.so
Only in gapps-kk-20131208/system/lib: libpatts_engine_jni_api.so
Only in gapps-kk-20131208/system/lib: libplus_jni_v8.so
Only in gapps-kk-20131208/system/lib: librs.antblur_constant.so
Only in gapps-kk-20131208/system/lib: librs.antblur_drama.so
Only in gapps-kk-20131208/system/lib: librs.antblur.so
Only in gapps-kk-20131208/system/lib: librs.drama.so
Only in gapps-kk-20131208/system/lib: librs.film_base.so
Only in gapps-kk-20131208/system/lib: librs.fixedframe.so
Only in gapps-kk-20131208/system/lib: librs.grey.so
Only in gapps-kk-20131208/system/lib: librs.image_wrapper.so
Only in gapps-kk-20131208/system/lib: librs_jni.so
Only in gapps-kk-20131208/system/lib: librsjni.so
Only in gapps-kk-20131208/system/lib: librs.retrolux.so
Only in gapps-kk-20131208/system/lib: libRSSupport.so
Only in gapps-kk-20131208/system/lib: libspeexwrapper.so
Only in gapps-kk-20131208/system/lib: libvorbisencoder.so
Only in gapps-kk-20131208/system/lib: libwebp_android.so
Only in gapps-kk-20131208/system/lib: libwebrtc_audio_coding.so
Only in gapps-kk-20131208/system/lib: libwebrtc_audio_preprocessing.so
Only in gapps-kk-20131208/system/priv-app: ConfigUpdater.apk
Only in gapps-kk-20131115/system/priv-app: GmsCore.apk
Files gapps-kk-20131115/system/priv-app/GoogleBackupTransport.apk and gapps-kk-20131208/system/priv-app/GoogleBackupTransport.apk differ
Only in gapps-kk-20131115/system/priv-app: GoogleBackupTransport.odex
Files gapps-kk-20131115/system/priv-app/GoogleFeedback.apk and gapps-kk-20131208/system/priv-app/GoogleFeedback.apk differ
Only in gapps-kk-20131115/system/priv-app: GoogleFeedback.odex
Files gapps-kk-20131115/system/priv-app/GoogleLoginService.apk and gapps-kk-20131208/system/priv-app/GoogleLoginService.apk differ
Only in gapps-kk-20131115/system/priv-app: GoogleLoginService.odex
Only in gapps-kk-20131115/system/priv-app: GoogleNow.apk
Files gapps-kk-20131115/system/priv-app/GoogleOneTimeInitializer.apk and gapps-kk-20131208/system/priv-app/GoogleOneTimeInitializer.apk differ
Only in gapps-kk-20131115/system/priv-app: GoogleOneTimeInitializer.odex
Files gapps-kk-20131115/system/priv-app/GooglePartnerSetup.apk and gapps-kk-20131208/system/priv-app/GooglePartnerSetup.apk differ
Only in gapps-kk-20131115/system/priv-app: GooglePartnerSetup.odex
Files gapps-kk-20131115/system/priv-app/GoogleServicesFramework.apk and gapps-kk-20131208/system/priv-app/GoogleServicesFramework.apk differ
Only in gapps-kk-20131115/system/priv-app: GoogleServicesFramework.odex
Only in gapps-kk-20131115/system/priv-app: GoogleWallet.apk
Only in gapps-kk-20131208/system/priv-app: PhoneSky.apk
Only in gapps-kk-20131208/system/priv-app: PrebuiltGmsCore.apk
Files gapps-kk-20131115/system/priv-app/SetupWizard.apk and gapps-kk-20131208/system/priv-app/SetupWizard.apk differ
Only in gapps-kk-20131115/system/priv-app: SetupWizard.odex
Only in gapps-kk-20131208/system/priv-app: talkback.apk
Only in gapps-kk-20131208/system/priv-app: Velvet.apk
Only in gapps-kk-20131115/system: vendor

Edit: Also it appears that the backup script for the gapps provided in the OP (20131115) is not working correctly. It should not be necessary to reflash gapps every time we install a new ROM build. It looks like all the vendor binaries for Facelock are not included in the backup script (system/addon.d/70-gapps.sh).

Edit2: I see the difference now. The facelock binaries backup script has been moved into 70-gapps.sh and it was in 71-gapps-faceunlock.sh