Fix bugs with SPEC2k for WebAssembly

tests/spec2k/164.gzip/diff

Index: tests/spec2k/164.gzip/diff
diff --git a/tests/spec2k/164.gzip/diff b/tests/spec2k/164.gzip/diff
new file mode 100644
index 0000000000000000000000000000000000000000..d58bd1785c25c556ab73e4f57473a59b0d6971ba
--- /dev/null
+++ b/tests/spec2k/164.gzip/diff
@@ -0,0 +1,32 @@
+diff -Naurb /usr/local/google/home/ddchen/spec/2000/benchspec/CINT2000/164.gzip/src/gzip.h src/gzip.h
+--- src/gzip.h  1999-04-11 01:18:33.000000000 -0700
++++ src2/gzip.h 2016-08-11 13:52:33.693274321 -0700
+@@ -315,7 +315,9 @@
+ extern void flush_outbuf  OF((void));
+ extern void flush_window  OF((void));
+ extern void write_buf     OF((int fd, voidp buf, unsigned cnt));
++#ifndef __EMSCRIPTEN__
+ extern char *strlwr       OF((char *s));
++#endif
+ extern char *gzipbasename     OF((char *fname));
+ extern void make_simple_name OF((char *name));
+ extern char *add_envopt   OF((int *argcp, char ***argvp, char *env));
+diff -Naurb /usr/local/google/home/ddchen/spec/2000/benchspec/CINT2000/164.gzip/src/util.c src/util.c
+--- src/util.c  1998-11-09 07:12:32.000000000 -0800
++++ src2/util.c 2016-08-11 13:52:52.409553232 -0700
+@@ -162,6 +162,7 @@
+     }
+ }
+
++#ifndef __EMSCRIPTEN__
+ /* ========================================================================
+  * Put string s in lower case, return s.
+  */
+@@ -172,6 +173,7 @@
+     for (t = s; *t; t++) *t = tolow(*t);
+     return s;
+ }
++#endif
+
+ /* ========================================================================
+  * Return the base name of a file (remove any directory prefix and