Get rid of the HAVE_PROTOTYPES configuration option, as well as the related JMETHOD and JPP macros.  libjpeg-turbo has never supported compilers that don't handle prototypes.  Doing so requires ansi2knr, which isn't even supported in the IJG code anymore.


git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1308 632fc199-4ca6-4c93-a231-07263d6284db