main/python: upgrade to 2.7.7

(cherry picked from commit 156bf140225c0ab6d004a3ad739cec193c6ab766)
main/python: upgrade to 2.7.8

ref #3399
(cherry picked from commit 9620c81917d454c855b17f5e711ae08e57b4ae4f)
main/linux-grsec: upgrade to 3.14.20
main/linux-grsec: fix booting of xen dom0
main/dahdi-linux-grsec: rebuild against kernel 3.14.20-r1
main/flashcache-grsec: rebuild against kernel 3.14.20-r1
main/ipfw-grsec: rebuild against kernel 3.14.20-r1
main/xtables-addons-grsec: rebuild against kernel 3.14.20-r1
testing/ipt-netflow-grsec: rebuild against kernel 3.14.20-r1
testing/spl-grsec: rebuild against kernel 3.14.20-r1
testing/virtualbox-additions-grsec: rebuild against kernel 3.14.20-r1