Upstream tracker: https://sourceforge.net/p/lxc/bugs/75/

the variables get assigned as:
KVER_MAJOR="3\n# Linux VServer"
KVER_MINOR="10\n# Linux VServer"

which causes parse errors:

Cgroup memory controller: 
+ '[' 3 '#' Linux VServer -ge 3 -a 10 '#' Linux VServer -ge 6 ']'
/usr/bin/lxc-checkconfig[98]: [: #: unexpected operator/operand
+ is_enabled CONFIG_CGROUP_MEM_RES_CTLR

in this code:
if [ $KVER_MAJOR -ge 3 -a $KVER_MINOR -ge 6 ]; then
    is_enabled CONFIG_MEMCG
else
    is_enabled CONFIG_CGROUP_MEM_RES_CTLR
fi


---
$ zgrep '^# Linux' /proc/config.gz | sed -r 's/.* ([0-9])\.[0-9]{1,2}\.[0-9]{1,3}.*/\1/'
3
# Linux VServer
---

$ zcat /proc/config.gz |grep '^# Linux'
---
# Linux/x86_64 3.10.10 Kernel Configuration
# Linux VServer
---


--- lxc-0.9.0/src/lxc/lxc-checkconfig.in	2013-09-17 12:00:03.486888314 +0300
+++ lxc-0.9.0/lxc-checkconfig	2013-09-17 12:47:12.000000000 +0300
@@ -78,13 +68,13 @@
 }
 
 CGROUP_MNT_PATH=`print_cgroups cgroup /proc/self/mounts | head -1`
-KVER_MAJOR=$($GREP '^# Linux' $CONFIG | \
+KVER_MAJOR=$($GREP '^# Linux.*Kernel Configuration' $CONFIG | \
     sed -r 's/.* ([0-9])\.[0-9]{1,2}\.[0-9]{1,3}.*/\1/')
 if [ "$KVER_MAJOR" = "2" ]; then
-KVER_MINOR=$($GREP '^# Linux' $CONFIG | \
+KVER_MINOR=$($GREP '^# Linux.*Kernel Configuration' $CONFIG | \
     sed -r 's/.* 2.6.([0-9]{2}).*/\1/')
 else
-KVER_MINOR=$($GREP '^# Linux' $CONFIG | \
+KVER_MINOR=$($GREP '^# Linux.*Kernel Configuration' $CONFIG | \
     sed -r 's/.* [0-9]\.([0-9]{1,3})\.[0-9]{1,3}.*/\1/')
 fi