Replace tabs following #define with spaces.

This resolves #564.

include/jemalloc/jemalloc.sh

@@ -4,7 +4,7 @@ objroot=$1
 
 cat <<EOF
 #ifndef JEMALLOC_H_
-#define	JEMALLOC_H_
+#define JEMALLOC_H_
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -15,7 +15,6 @@ for hdr in jemalloc_defs.h jemalloc_rename.h jemalloc_macros.h \
            jemalloc_protos.h jemalloc_typedefs.h jemalloc_mangle.h ; do
   cat "${objroot}include/jemalloc/${hdr}" \
       | grep -v 'Generated from .* by configure\.' \
-      | sed -e 's/^#define /#define	/g' \
       | sed -e 's/ $//g'
   echo
 done