3rdparty: bzip2: properly use stdio-free version, don't include tests and utils to the build

3rdparty/bzip2/wscript

@@ -21,8 +21,10 @@ def build(bld):
 #		BZ_VERSION='1.1.0-fwgs'
 #	)
 
+	bz_sources = ['bzip2/blocksort.c', 'bzip2/huffman.c', 'bzip2/crctable.c', 'bzip2/randtable.c', 'bzip2/compress.c', 'bzip2/decompress.c', 'bzip2/bzlib.c']
+
 	bld.stlib(
-		source = bld.path.ant_glob(['bzip2/*.c']),
+		source = bz_sources,
 		target = 'bzip2',
 #		use = 'bz_version.h',
 		features = 'c',

engine/common/net_chan.c

@@ -104,6 +104,51 @@ const char *ns_strings[NS_COUNT] =
 	"Server",
 };
 
+void bz_internal_error( int errcode );
+void bz_internal_error( int errcode )
+{
+	Con_Printf( S_ERROR "bzip2/libbzip2: internal error number %d.\n"
+			"This is a bug in bzip2/libbzip2, %s.\n"
+			"Please report it at: https://gitlab.com/bzip2/bzip2/-/issues\n"
+			"If this happened when you were using some program which uses\n"
+			"libbzip2 as a component, you should also report this bug to\n"
+			"the author(s) of that program.\n"
+			"Please make an effort to report this bug;\n"
+			"timely and accurate bug reports eventually lead to higher\n"
+			"quality software.  Thanks.\n\n",
+			errcode, BZ2_bzlibVersion( ));
+
+   if (errcode == 1007) {
+		Con_Printf(
+			"\n*** A special note about internal error number 1007 ***\n"
+			"\n"
+			"Experience suggests that a common cause of i.e. 1007\n"
+			"is unreliable memory or other hardware.  The 1007 assertion\n"
+			"just happens to cross-check the results of huge numbers of\n"
+			"memory reads/writes, and so acts (unintendedly) as a stress\n"
+			"test of your memory system.\n"
+			"\n"
+			"I suggest the following: try compressing the file again,\n"
+			"possibly monitoring progress in detail with the -vv flag.\n"
+			"\n"
+			"* If the error cannot be reproduced, and/or happens at different\n"
+			"  points in compression, you may have a flaky memory system.\n"
+			"  Try a memory-test program.  I have used Memtest86\n"
+			"  (www.memtest86.com).  At the time of writing it is free (GPLd).\n"
+			"  Memtest86 tests memory much more thorougly than your BIOSs\n"
+			"  power-on test, and may find failures that the BIOS doesn't.\n"
+			"\n"
+			"* If the error can be repeatably reproduced, this is a bug in\n"
+			"  bzip2, and I would very much like to hear about it.  Please\n"
+			"  let me know, and, ideally, save a copy of the file causing the\n"
+			"  problem -- without which I will be unable to investigate it.\n"
+			"\n"
+		);
+   }
+
+	Sys_Error( "bzip2/libbzip2: internal error number %d\n", errcode );
+}
+
 
 /*
 =================================