New checker yamlxs for YAML.
oclint does not have -text option any more
removed executable() check so as to support different perl versions using perlbrew (I.e. local version different to system version) via "let g:syntastic_perl_interpreter=/usr/bin/env perl"
Merge pull request #875 from colinmkeith/syntaxchecker_yamlxs

Support for perlbrew.

Remove executable() checks so as to support things like `let g:syntastic_perl_interpreter='/usr/bin/env perl'`.
Better support for perlbrew.
Merge pull request #874 from darkiri/master

oclint does not have -text option any more
Name specified in ghc-mod.vim is ghc_mod, not ghc-mod.
Minor cleanup.

Cleanup highlighting initialization.
Document the syntax highlight groups involved.
Merge pull request #876 from jcristovao/master

Bit rot: the registered name for ghc-mod is ghc_mod.
Add syntax checking plugin for po files of gettext
Cleanup for msgfmt.

Fix errorformat.
Add whitespace processing.
Add custom highlighting for 'keyword "..." unknown'.
Add PO to the list of supported filetypes.
add syntax_checkers/limbo/limbo.vim
Minor cleanup: qualify regexp in msgfmt.
Merge remote-tracking branch 'limbo/syntax-checker-limbo'
Cleanup the limbo checker.
Add Limbo to the list of supported languages.
Minor cleanup: replace match() by stridx() when appropriate.
Minor cleanup for pylama.
Minor cleanup: qualify case sensitivity.