libgd: update to 2.30

Fixed CPE_ID.

Simplified TIFF option.

Refreshed/removed upstream patches.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/libgd/patches/100-no-cxx.patch

@@ -1,6 +1,6 @@
 --- a/src/CMakeLists.txt
 +++ b/src/CMakeLists.txt
-@@ -23,8 +23,6 @@ SET (LIBGD_SRC_FILES
+@@ -22,8 +22,6 @@ SET (LIBGD_SRC_FILES
  	gd_io_dp.c
  	gd_io_file.c
  	gd_io_ss.c
@@ -9,7 +9,7 @@
  	gd_jpeg.c
  	gd_matrix.c
  	gd_nnquant.c
-@@ -60,8 +58,6 @@ SET (LIBGD_SRC_FILES
+@@ -59,8 +57,6 @@ SET (LIBGD_SRC_FILES
  	gdhelpers.c
  	gdhelpers.h
  	gdkanji.c
@@ -18,9 +18,11 @@
  	gdtables.c
  	gdxpm.c
  	jisx0208.h
-@@ -175,5 +171,4 @@ install(FILES
+@@ -198,7 +194,6 @@ install(FILES
  	gdfonts.h
  	gdfontt.h
  	gdfx.h
 -	gdpp.h
  	DESTINATION include)
+ 
+ CONFIGURE_FILE(../config/gdlib.pc.cmake gdlib.pc @ONLY)