conv, conv2, and deconv use strided arrays
added type assert to toq
update Ubuntu installation notes
Merge pull request #4148 from astrieanna/toqtype

added type assert to toq
remove repeated code in Cmd readbytes()
fix #4150
fix #4152
Merge pull request #4143 from heptal/master

update Ubuntu installation notes
Add tests to make sure that Base.Sys.* run
remove some dead code from the parser
Merge pull request #4149 from simonster/sysinfo-tests

Add tests to make sure that Base.Sys.* don't throw
Merge branch 'master' of github.com:JuliaLang/julia
allow Bools as type parameters
fix #4141
Merge pull request #4146 from bkalpert/master

conv, conv2, and deconv use strided arrays