Tweak the Kindle startup script.

Not a huge fan of negative nice values, you're screwed if it chokes
@ 100% CPU on UP systems.
Besides, AFAICT, neither awesome nor the Booklet thread runs at negative values.
Merge pull request #712 from NiLuJe/master

Tweak the Kindle startup script.
Don't even try to launch on Kindle FW 5.0
Merge remote-tracking branch 'upstream/master'
Merge pull request #713 from NiLuJe/master

Minor Kindle startup script tweak
update koreader-base
Merge pull request #716 from chrox/master

update koreader-base
Update koreader-base

PW2 & FFI stuff
Merge pull request #719 from NiLuJe/master

Update koreader-base
Update koreader-base

Fix Android build
Merge pull request #720 from NiLuJe/master

Update koreader-base
fix importing finite math from GLIBC_2.15
This should fix #722.
Merge pull request #723 from chrox/master

fix importing finite math from GLIBC_2.15
fix(test): update package list in travis