libretro, add Pico pad overlay and storyware pages handling

Makefile

@@ -246,7 +246,13 @@ endif
 ifeq "$(PLATFORM)" "libretro"
 OBJS += platform/libretro/libretro.o
 ifneq ($(STATIC_LINKING), 1)
+CFLAGS += -DHAVE_ZLIB
 OBJS += platform/libretro/libretro-common/compat/compat_strcasestr.o
+OBJS += platform/libretro/libretro-common/file/file_path_io.o
+OBJS += platform/libretro/libretro-common/formats/png/rpng.o
+OBJS += platform/libretro/libretro-common/streams/trans_stream.o
+OBJS += platform/libretro/libretro-common/streams/trans_stream_pipe.o
+OBJS += platform/libretro/libretro-common/streams/trans_stream_zlib.o
 ifeq "$(USE_LIBRETRO_VFS)" "1"
 OBJS += platform/libretro/libretro-common/compat/compat_posix_string.o
 OBJS += platform/libretro/libretro-common/compat/compat_strl.o

Makefile.libretro

@@ -30,6 +30,7 @@ CFLAGS ?=
 CFLAGS += -I platform/libretro/libretro-common/include
 CFLAGS += -I platform/libretro/libretro-common/include/compat
 CFLAGS += -I platform/libretro/libretro-common/include/encodings
+CFLAGS += -I platform/libretro/libretro-common/include/formats
 CFLAGS += -I platform/libretro/libretro-common/include/streams
 CFLAGS += -I platform/libretro/libretro-common/include/string
 CFLAGS += -I platform/libretro/libretro-common/include/vfs

jni/Android.mk

@@ -55,6 +55,10 @@ include $(COMMON_DIR)/common.mak
 
 SOURCES_C := $(LIBRETRO_DIR)/libretro.c \
              $(LIBRETRO_COMM_DIR)/compat/compat_strcasestr.c \
+             $(LIBRETRO_COMM_DIR)/formats/png/rpng.c \
+             $(LIBRETRO_COMM_DIR)/streams/trans_stream.c \
+             $(LIBRETRO_COMM_DIR)/streams/trans_stream_pipe.c \
+             $(LIBRETRO_COMM_DIR)/streams/trans_stream_zlib.c \
              $(COMMON_DIR)/mp3.c \
              $(COMMON_DIR)/mp3_sync.c \
              $(COMMON_DIR)/mp3_dummy.c \