Fix warnings

[zonuexe]

% make test

In phpunit--listing-groups:
phpunit.el:214:8:Warning: ‘next-line’ is for interactive use only; use
    ‘forward-line’ instead.

In phpunit--colorize-compilation-buffer:
phpunit.el:257:33:Warning: reference to free variable
    ‘compilation-filter-start’

In phpunit-run:
phpunit.el:277:17:Warning: reference to free variable
    ‘compilation-error-regexp-alist’
phpunit.el:277:17:Warning: assignment to free variable
    ‘compilation-error-regexp-alist’

In end of data:
phpunit.el:348:1:Warning: the following functions are not known to be defined:
    tramp-file-name-localname, tramp-dissect-file-name,
    ansi-color-apply-on-region