repl: fix multiline truncation bug

For example, typing:

    type X
    a
    b
    c
    end<up><up><up><up><enter>

results in:

    julia> type X
           a
    julia> _
           c
           end

where _ is the cursor.
suppress 'git grep' matches from imdb-1.tsv
Merge branch 'master' of https://github.com/JuliaLang/julia
Fix #6304
Fix loladiro/REPL.jl#40
rename julia-basic -> julia (closes #6188)
Fix Build

The exponent for powi is always i32, so it doesn't need to be/can't be specified in getDeclaration.
Merge pull request #6309 from JuliaLang/mn/nobasic

rename julia-basic -> julia
Merge branch 'master' of https://github.com/JuliaLang/julia