Fix error in MIPS DSPr2 accelerated smooth downsample routine


git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1302 632fc199-4ca6-4c93-a231-07263d6284db
Fix build, which was broken by the checkin of the MIPS DSPr2 accelerated smooth downsampling routine.  Until/unless other platforms include SIMD support for that function, it's just easier to #ifdef around it rather than adding stubs for the other platforms.


git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1303 632fc199-4ca6-4c93-a231-07263d6284db
SIMD-accelerated NULL convert routine for MIPS DSPr2


git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1304 632fc199-4ca6-4c93-a231-07263d6284db
Clean up code formatting in the SIMD interface functions


git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1305 632fc199-4ca6-4c93-a231-07263d6284db
Remove all of the NEED_SHORT_EXTERNAL_NAMES stuff.  There is scant information available as to which linkers ever had a 15-character global symbol name limit.  AFAICT, it might have been a VMS and/or a.out BSD thing, but none of those platforms have ever been supported by libjpeg-turbo (nor are such systems supported by other open source libraries of this nature.)


git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1307 632fc199-4ca6-4c93-a231-07263d6284db