Minor cleanup for pylama.
Minor cleanup: qualify case sensitivity.
SyntasticCheck accepts multiple arguments. Cache available checkers.
added a syntax checker for racket files
Cleanup fo the racket checker.
New checker for lex: flex.
Fix the scss_lint checker.
Minor fix: highlighting for flex.
New checker for yacc: bison.
Minor fix: errorformat for bison.
Fix an infinite loop in syntastic#util#findInParent().

As a side effect, also fix some of the "has('win32')" mess.
Workaround for autocmd brain damage.

Vim doesn't call autocmd commands in a predictible order, which can lead
to missing filetype when jumping to a new file with `lrewind`.
Check return code of ghc-mod.
Fixing small type in help docs

Incorrectly said "symobls" instead of "symbols."
Merge pull request #896 from arusahni/patch-1

Fixing small typo in help docs
Another type in the help.
Pylint: add exit code check.
Makeprg clarification in the docs.
Update: dart_analyzer has been replaced by dartanalyzer.
:SyntasticInfo now takes an optional argument.

Added several clarifications to the manual.