(compilation-mode-font-lock-keywords):
Use `compilation-text-face', `compilation-info-text-face' and
`compilation-error-text-face' instead of `font-lock-keyword-face'.
(compilation-error): New face.
(compilation-error-file-name): Inherit from
`compilation-error' instead of `font-lock-warning-face'.
(compilation-warning-file-name): Inherit from
`compilation-warning' instead of `font-lock-warning-face'.
(compilation-info, compilation-error-file-name)
(compilation-warning-file-name, compilation-info-file-name)
(compilation-line-number, compilation-column-number): Doc fix.
(compilation-error-text-face, compilation-warning-text-face)
(compilation-info-text-face): New face variables.
(compilation-line-face, compilation-column-face)
(compilation-enter-directory-face)
(compilation-leave-directory-face): Doc fix.
(compilation-text-face): New function.