Add support for storing compressed logs

If log_store_compressed is set, fio won't decompress for storing
them in a file. Instead, you can use --inflate-log=logfile.fz to
output the contents to stdout.

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/cconv.c b/cconv.c
index aeec04b..d4fb158 100644
--- a/cconv.c
+++ b/cconv.c
@@ -153,6 +153,7 @@
 	o->log_avg_msec = le32_to_cpu(top->log_avg_msec);
 	o->log_offset = le32_to_cpu(top->log_offset);
 	o->log_gz = le32_to_cpu(top->log_gz);
+	o->log_gz_store = le32_to_cpu(top->log_gz_store);
 	o->norandommap = le32_to_cpu(top->norandommap);
 	o->softrandommap = le32_to_cpu(top->softrandommap);
 	o->bs_unaligned = le32_to_cpu(top->bs_unaligned);
@@ -325,6 +326,7 @@
 	top->log_avg_msec = cpu_to_le32(o->log_avg_msec);
 	top->log_offset = cpu_to_le32(o->log_offset);
 	top->log_gz = cpu_to_le32(o->log_gz);
+	top->log_gz_store = cpu_to_le32(o->log_gz_store);
 	top->norandommap = cpu_to_le32(o->norandommap);
 	top->softrandommap = cpu_to_le32(o->softrandommap);
 	top->bs_unaligned = cpu_to_le32(o->bs_unaligned);