@- Fixed some modules to allow using output-buffering. (Thies)

@- Fixed some modules to allow using output-buffering. (Thies)

i nuked all unneded calls to php_header() - i'm not too sure how we do
handle HEAD Requests as they were only detected via php_header(). but calling
php_header from a module makes output-buffering unusable.

NOTICE: there is some EBSDIC stuff in gd.c - i think it's obsolete.