Update ExecutionTests.jl to work with Windows path

Fixes #273

Author: strickek

test/ExecutionTests.jl

@@ -189,9 +189,9 @@ b = @bprofile likegcd(x, y) setup=(x = rand(2:200); y = rand(2:200))
 io = IOBuffer()
 Profile.print(IOContext(io, :displaysize=>(24,200)))
 str = String(take!(io))
-@test  occursin(r"BenchmarkTools(\.jl)?/src/execution\.jl:\d+; _run", str)
-@test !occursin(r"BenchmarkTools(\.jl)?/src/execution\.jl:\d+; warmup", str)
-@test !occursin(r"BenchmarkTools(\.jl)?/src/execution\.jl:\d+; tune!", str)
+@test  occursin(r"BenchmarkTools(\.jl)?(/|\\)src(/|\\)execution\.jl:\d+; _run", str)
+@test !occursin(r"BenchmarkTools(\.jl)?(/|\\)src(/|\\)execution\.jl:\d+; warmup", str)
+@test !occursin(r"BenchmarkTools(\.jl)?(/|\\)src(/|\\)execution\.jl:\d+; tune!", str)
 b = @bprofile 1+1
 Profile.print(IOContext(io, :displaysize=>(24,200)))
 str = String(take!(io))