[libpng16] Added -DZ_SOLO to contrib/pngminim/*/makefile so they will work

with zlib-1.2.7

ANNOUNCE

@@ -517,6 +517,7 @@ Version 1.6.0beta30 [September 27, 2012]
   Added a work around for GCC 4.2 optimization bug.
   Marked the broken (bad white point) original HP sRGB profiles correctly and
     correct comments.
+  Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
 
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CHANGES

@@ -4269,6 +4269,7 @@ Version 1.6.0beta30 [September 27, 2012]
   Added a work around for GCC 4.2 optimization bug.
   Marked the broken (bad white point) original HP sRGB profiles correctly and
     correct comments.
+  Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

contrib/pngminim/decoder/makefile

@@ -14,7 +14,7 @@ LD=$(CC)
 RM=rm -f
 COPY=cp
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. -O1
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO -DNO_GZIP -I. -O1
 
 C=.c
 O=.o

contrib/pngminim/encoder/makefile

@@ -14,7 +14,7 @@ LD=$(CC)
 RM=rm -f
 COPY=cp
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZIP -I. -O1
+CFLAGS=-DPNG_USER_CONFIG -DZ_SOLO -DNO_GZIP -I. -O1
 
 C=.c
 O=.o

contrib/pngminim/preader/makefile

@@ -30,7 +30,7 @@ XLIB = -L/usr/X11R6/lib -lX11
 #LIBS = $(XLIB)
 LIBS = $(XLIB) -lm                      #platforms that need libm
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. $(XINC) -O1
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO -DNO_GZIP -I. $(XINC) -O1
 
 C=.c
 O=.o