Fix undefined variable (typo)
doc/manual/methods: fix code markup for named args

ReStructured Text is really annoyingly fiddly.
Merge pull request #2756 from zachallaun/fix-var-typo

Fix undefined variable (typo)
change jlapi to Python-like style in which NULL is returned on exceptions, and a separate jl_exception_occurred function retrieves the exception
Merge pull request #2755 from stevengj/jlapi_except

RFC: change jlapi (external C API) to Python-like exception-passing style
make evalfile() operate in a temporary module, and use it to load build scripts
fixes #2749
Merge branch 'master' of github.com:JuliaLang/julia
allow Foo.bar(x) method def syntax. closes #1540
bugfix: jl_exception_occurred and jl_exception_clear should be in julia.expmap