[libpng16] Update internal version numbering and SO-numbers

scripts/makefile.solaris

@@ -9,8 +9,8 @@
 # and license in png.h
 
 # Library name:
-LIBNAME = libpng15
-PNGMAJ = 15
+LIBNAME = libpng16
+PNGMAJ = 16
 
 # Shared library names:
 LIBSO=$(LIBNAME).so
@@ -26,7 +26,7 @@ LN_SF=ln -f -s
 RANLIB=echo
 RM_F=/bin/rm -f
 
-# Where make install puts libpng.a, libpng15.so*, and png.h
+# Where make install puts libpng.a, libpng16.so*, and png.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 
@@ -44,7 +44,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 CFLAGS=-I$(ZLIBINC) -W -Wall -O \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng15 -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng16 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -92,7 +92,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
+	-e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -101,7 +101,7 @@ libpng-config:
 	echo cppflags=\"\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-R$(LIBPATH)\"; \
-	echo libs=\"-lpng15 -lz -lm\"; \
+	echo libs=\"-lpng16 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config