Fix big integers input error

Fixing issue #2
Reenabling Qt4.
8 jobs for master in 4 minutes and 6 seconds
Status Job ID Name Coverage
  Configure
passed #4717
mac
configure:mac

00:00:29

passed #4718
windows
configure:win32

00:00:21

 
  Build
passed #4720
mac
build:mac

00:02:31

passed #4719
windows
build:win32

00:01:49

 
  Dist
passed #4722
mac
dist:mac

00:00:22

passed #4721
windows
dist:win32

00:00:18

 
  Pack
passed #4724
mac
pack:mac

00:00:36

passed #4723
windows
pack:win32

00:00:28