Log Message:
p5-Compress-Raw-Zlib: update to 2.076.

  2.076 21 Nov 2017

      * Zlib.xs
        Silence gcc compiler warnings when -Wsign-compare is enabled
        #123688: Compilation warnings with clang

      * zlib-src/inflate.c and zlib-src/infback.c
        Silence gcc compiler warnings when -Wimplicit-fallthrough is enabled
        #123358: Compilation warnings with gcc-7.*

      * Makefile.PL
        Windows uses -lzlib. Linux uses -lz
        #123699: wrong external zlib name used on Windows